ocda org file ("metaverse" renamed)

- ocda - object centric document abstraction
- "metaverse" name predates current association,
  no need to hold on to either, rename

1 files changed, 0 insertions, 8264 deletions

diff --git a/org/metaverse.org b/org/metaverse.org
deleted file mode 100644
index a16c72f..0000000
--- a/org/metaverse.org
+++ /dev/null
@@ -1,8264 +0,0 @@
--*- mode: org -*-
-#+TITLE:       spine (doc_reform) document abstraction
-#+DESCRIPTION: documents - structuring, publishing in multiple formats & search
-#+FILETAGS:    :spine:abstraction:
-#+AUTHOR:      Ralph Amissah
-#+EMAIL:       [[mailto:ralph.amissah@gmail.com][ralph.amissah@gmail.com]]
-#+COPYRIGHT:   Copyright (C) 2015 - 2023 Ralph Amissah
-#+LANGUAGE:    en
-#+STARTUP:     content hideblocks hidestars noindent entitiespretty
-#+PROPERTY:    header-args  :noweb yes
-#+PROPERTY:    header-args+ :exports code
-#+PROPERTY:    header-args+ :results no
-#+PROPERTY:    header-args+ :cache no
-#+PROPERTY:    header-args+ :padline no
-#+PROPERTY:    header-args+ :mkdirp yes
-#+OPTIONS:     H:3 num:nil toc:t \n:t ::t |:t ^:nil -:t f:t *:t
-
-- [[./doc-reform.org][doc-reform.org]]  [[./][org/]]
-
-* 1. Document Abstraction
-Process markup document, create document abstraction.
-
-** _module template_ :module:metadoc_from_src:
-
-#+HEADER: :tangle "../src/doc_reform/meta/metadoc_from_src.d"
-#+HEADER: :noweb yes
-#+BEGIN_SRC d
-<<doc_header_including_copyright_and_license>>
-/++
-  document abstraction:
-  abstraction of sisu markup for downstream processing
-  metadoc_from_src.d
-+/
-module doc_reform.meta.metadoc_from_src;
-template docAbstraction() {
-                                                                                /+ ↓ abstraction imports +/
-  <<abs_top_imports>>
-                                                                                /+ ↓ abstraction mixins +/
-  <<abs_top_mixins>>
-                                                                                /+ ↓ abstraction struct init +/
-  <<abs_top_init_struct_enum>>
-  <<abs_top_init_struct_general>>
-  <<abs_top_init_generic_object_struct_heading_ancestors>>
-  <<abs_top_init_generic_object_struct_dom_markup_tags>>
-  <<abs_top_init_generic_object_struct_dom_collapsed_tags>>
-  <<abs_top_init_ocn_emit>>
-  <<abs_top_init_inline_markup_faces>>
-  <<abs_top_init_string_links_and_images>>
-  <<abs_top_init_trail>>
-  <<abs_inline_para_tag_associations>>
-                                                                                /+ ↓ abstract marked up document +/
-  @system auto docAbstraction(CMM,Opt,Mf) (
-    char[][]           markup_sourcefile_content,
-    CMM                conf_make_meta,
-    Opt                opt_action,
-    Mf                 manifested,
-    bool               _new_doc
-  ) {
-    static auto rgx = RgxI();
-                                                                                /+ ↓ abstraction init +/
-    <<abs_init_rest_0>>
-    <<abs_init_rest_1>>
-                                                                                /+ abstraction init ↑ +/
-    <<make_tests>>
-                                                                                /+ ↓ ↻ loop markup document/text line by line +/
-    srcDocLoop:
-    foreach (line; markup_sourcefile_content) {                                 /+ ↓ markup document/text line by line +/
-                                                                                // "line" variable can be empty but should never be null
-      <<abs_in_loop_body_00_0>>
-      <<abs_in_loop_body_00_1>>
-      if ( pith["block_is"] == eN.blk_is.code
-        && pith["block_state"] == eN.blk_state.on
-      ) {
-        <<abs_in_loop_body_00_code_block>>
-      } else if (!matchFirst(line, rgx.skip_from_regular_parse)) {              /+ object other than "code block" object +/
-                                                                                /+ (includes regular text paragraph, headings & blocks other than code) +/
-                                                                                /+ heading, glossary, blurb, poem, group, block, quote, table +/
-        <<abs_in_loop_body_non_code_obj_fontface_markup>>
-        <<abs_in_loop_body_non_code_obj_in_biblio>>
-        <<abs_in_loop_body_non_code_obj_in_glossary>>
-        <<abs_in_loop_body_non_code_obj_in_blurb>>
-        <<abs_in_loop_body_non_code_obj_in_block>>
-          <<abs_in_loop_body_non_code_obj_in_block_quote>>
-          <<abs_in_loop_body_non_code_obj_in_block_group>>
-          <<abs_in_loop_body_non_code_obj_in_block_block>>
-          <<abs_in_loop_body_non_code_obj_in_block_poem>>
-          <<abs_in_loop_body_non_code_obj_in_block_table>>
-        } else {                                                                /+ not within a block group +/
-          <<abs_in_loop_body_open_block_obj_assert>>
-          if (line.matchFirst(rgx.block_open)) {
-            <<abs_in_loop_body_open_block_obj>>
-          } else if (!line.empty) {                                             /+ line not empty +/
-                                                                                /+ non blocks (headings, paragraphs) & closed blocks +/
-            <<abs_in_loop_body_not_block_obj_assert>>
-            <<abs_in_loop_body_not_block_obj_bookindex>>
-            <<abs_in_loop_body_not_block_obj_not_bookindex>>
-              <<abs_in_loop_body_not_block_obj_not_bookindex_a_comment>>
-              <<abs_in_loop_body_not_block_obj_not_bookindex_a_para_type>>
-              <<abs_in_loop_body_not_block_obj_not_bookindex_a_heading>>
-              <<abs_in_loop_body_not_block_obj_not_bookindex_a_para>>
-            <<abs_in_loop_body_not_block_obj_not_bookindex_close>>
-          } else if (pith["block_state"] == eN.blk_state.closing) {             /+ line empty, with blocks flag +/
-            <<abs_in_loop_body_not_block_obj_line_empty_blocks_flags>>
-          } else {                                                              /+ line.empty, post contents, empty variables: +/
-            <<abs_in_loop_body_not_block_obj_line_empty_assert>>
-            <<abs_in_loop_body_not_block_obj_line_empty_heading_obj>>
-            <<abs_in_loop_body_not_block_obj_line_empty_para_obj>>
-          }                                                                     // close else for line empty
-        }                                                                       // close else for not the above
-      }                                                                         // close after non code, other blocks or regular text
-      <<abs_in_loop_body_reloop_get_prior_state>>
-    }                                                                           /+ ← srcDocLoop closed: loop markup document/text line by line +/
-                                                                                /+ ↓ post loop markup document/text +/
-                                                                                /+ ↓ post loop markup document/text +/
-    <<abs_loop_body_exit_eof_xml_dom_tail>>
-    <<abs_post_endnote_tuple>>
-    <<abs_post_glossary_nugget>>
-    <<abs_post_biblio_init>>
-    <<abs_post_biblio>>
-    <<abs_post_biblio_debug_write>>
-    <<abs_post_bookindex>>
-    <<abs_post_no_blurb>>
-    <<abs_post_contents>>
-    <<abs_post_separate_doc_head_and_doc_body>>
-    <<abs_post_heading_ancestors_markup>>
-    <<abs_post_heading_ancestors_collapsed>>
-    <<abs_post_loop_section_body_get_ancestors>>
-    <<abs_post_loop_section_endnotes>>
-    <<abs_post_loop_section_glossary>>
-    <<abs_post_loop_section_biblio>>
-    <<abs_post_loop_section_bookindex>>
-    <<abs_post_loop_section_blurb>>
-    <<abs_post_loop_all_obj_get_heading_decendants>>
-    <<abs_post_loop_all_obj_get_image_names>>
-    <<abs_post_loop_all_obj_get_image_dimensions>>
-    <<abs_post_loop_all_obj_get_links>>
-    <<abs_post_loop_section_head>>
-    <<abs_post_loop_section_toc>>
-    <<abs_post_reloop_section_body>>
-    <<abs_post_reloop_section_endnotes>>
-    <<abs_post_reloop_section_glossary_get_numbering>>
-    <<abs_post_reloop_section_biblio_get_numbering>>
-    <<abs_post_reloop_section_bookindex_get_index>>
-    <<abs_post_reloop_section_blurb_get_numbering>>
-    <<abs_post_reloop_section_all_get_decendants>>
-    <<abs_post_heading_obj_reinitialize>>
-    <<abs_post_the_document>>
-    <<abs_post_document_parts_keys>>
-    <<abs_post_document_segnames>>
-    <<abs_post_document_reinitialize>>
-    <<abs_struct_doc_has>>
-    <<abs_return_tuple>>
-                                                                                /+ post loop markup document/text ↑ +/
-  }                                                                             /+ ← closed: abstract doc source +/
-                                                                                /+ ↓ abstraction functions +/
-  <<abs_functions_object_reset>>
-  <<abs_functions_header_set_common>>
-  <<abs_functions_ocn_status>>
-  <<abs_functions_substitutions_user_requested>>
-  <<abs_functions_substitutions_fontface>>
-  <<abs_functions_block_open>>
-    <<abs_functions_block_regex>>
-    <<abs_functions_block_curly_open_code>>
-    <<abs_functions_block_curly_open_poem>>
-    <<abs_functions_block_curly_open_group>>
-    <<abs_functions_block_curly_open_block>>
-    <<abs_functions_block_curly_open_quote>>
-    <<abs_functions_block_curly_open_table>>
-    <<abs_functions_block_curly_open_table_special>>
-    <<abs_functions_block_tic_open_code>>
-    <<abs_functions_block_tic_open_poem>>
-    <<abs_functions_block_tic_open_group>>
-    <<abs_functions_block_tic_open_block>>
-    <<abs_functions_block_tic_open_quote>>
-    <<abs_functions_block_tic_open_table>>
-  <<abs_functions_block_close>>
-  <<abs_functions_block_quote>>
-  <<abs_functions_block_group>>
-  <<abs_functions_block_block>>
-  <<abs_functions_block_poem>>
-  <<abs_functions_block_code>>
-  <<abs_functions_block_table>>
-  <<abs_functions_block_biblio_map_tags>>
-  <<abs_functions_block_biblio_text_block>>
-  <<abs_functions_block_line_status_empty_table_closed>>
-  <<abs_functions_block_line_status_empty_block_close_function_open>>
-      <<abs_functions_block_line_status_empty_block_quote>>
-      <<abs_functions_block_line_status_empty_block_group>>
-      <<abs_functions_block_line_status_empty_block_block>>
-      <<abs_functions_block_line_status_empty_block_poem>>
-      <<abs_functions_block_line_status_empty_block_code>>
-      <<abs_functions_block_line_status_empty_block_table>>
-  <<abs_functions_block_line_status_empty_block_close_function_close>>
-  <<abs_functions_book_index>>
-  <<abs_functions_heading_found>>
-  <<abs_functions_heading_make_set>>
-  <<abs_functions_heading_matched>>
-  <<abs_functions_para_matched>>
-  <<abs_functions_para_font_faces_line>>
-  <<abs_functions_table_instructions>>
-  <<abs_functions_table_munge_array>>
-  <<abs_functions_table_munge_substantive>>
-  <<abs_functions_table_munge_substantive_special>>
-                                                                                /+ abstraction functions ↑ +/
-                                                                                /+ ↓ abstraction function emitters +/
-  <<meta_emitters_ocn>>
-                                                                                /+ +/
-  <<meta_emitters_obj_inline_markup_munge_function_open>>
-    <<meta_emitters_obj_inline_markup_munge_function_markup_images>>
-    <<meta_emitters_obj_inline_markup_munge_function_markup_footnotes_endnotes>>
-    <<meta_emitters_obj_inline_markup_munge_function_object_notes_and_links>>
-    <<meta_emitters_obj_inline_markup_munge_function_heading>>
-    <<meta_emitters_obj_inline_markup_munge_function_para>>
-    <<meta_emitters_obj_inline_markup_munge_function_quote>>
-    <<meta_emitters_obj_inline_markup_munge_function_group>>
-    <<meta_emitters_obj_inline_markup_munge_function_block>>
-    <<meta_emitters_obj_inline_markup_munge_function_verse>>
-    <<meta_emitters_obj_inline_markup_munge_function_code>>
-    <<meta_emitters_obj_inline_markup_munge_function_table>>
-    <<meta_emitters_obj_inline_markup_munge_function_comment>>
-  <<meta_emitters_obj_inline_markup_munge_function_close>>
-  <<meta_emitters_obj_inline_markup_function_open>>
-    <<meta_emitters_obj_inline_markup_and_anchor_tags_and_misc>>
-    <<meta_emitters_obj_inline_markup_table_of_contents>>
-  <<meta_emitters_obj_inline_markup_private_function_open>>
-    <<meta_emitters_obj_inline_markup_heading_numbering_and_segment_anchor_tags>>
-    <<meta_emitters_obj_inline_segment_anchor_tags_manufacture>>
-  <<meta_emitters_obj_inline_markup_private_function_close>>
-                                                                                /+ +/
-  <<meta_emitters_obj_attributes>>
-    <<meta_emitters_obj_attributes_public>>
-    <<meta_emitters_obj_attributes_private>>
-    <<meta_emitters_obj_attributes_private_an_attribute_txt_para_and_blocks>>
-    <<meta_emitters_obj_attributes_private_an_attribute_txt_heading>>
-    <<meta_emitters_obj_attributes_private_an_attribute_txt_para>>
-    <<meta_emitters_obj_attributes_private_an_attribute_txt_quote>>
-    <<meta_emitters_obj_attributes_private_an_attribute_txt_group>>
-    <<meta_emitters_obj_attributes_private_an_attribute_txt_block>>
-    <<meta_emitters_obj_attributes_private_an_attribute_txt_verse>>
-    <<meta_emitters_obj_attributes_private_an_attribute_txt_code>>
-    <<meta_emitters_obj_attributes_private_an_attribute_txt_table>>
-    <<meta_emitters_obj_attributes_private_an_attribute_txt_comment>>
-    <<meta_emitters_obj_attributes_private_json>>
-  <<meta_emitters_obj_attributes_private_close>>
-                                                                                /+ +/
-  <<meta_emitters_bookindex_nugget>>
-  <<meta_emitters_bookindex_report_indented>>
-  <<meta_emitters_bookindex_report_section_function_open>>
-    <<meta_emitters_bookindex_report_section_function_write_section>>
-    <<meta_emitters_bookindex_report_section_function_build_abstraction>>
-  <<meta_emitters_bookindex_report_section_function_close>>
-                                                                                /+ +/
-  <<meta_emitters_endnotes_function_open>>
-    <<meta_emitters_endnotes_function_gather_notes>>
-    <<meta_emitters_endnotes_function_gathered_notes>>
-    <<meta_emitters_endnotes_function_endnote_objects>>
-  <<meta_emitters_endnotes_function_close>>
-                                                                                /+ +/
-  <<meta_emitters_bibliography_function_open>>
-    <<meta_emitters_bibliography_function_biblio_sorted>>
-    <<meta_emitters_bibliography_function_biblio_unsorted_json_object_array>>
-    <<meta_emitters_bibliography_function_biblio_sort_json>>
-    <<meta_emitters_bibliography_function_biblio_sorted_json>>
-  <<meta_emitters_bibliography_function_close>>
-                                                                                /+ +/
-  <<meta_emitters_metadata_function_open>>
-    <<meta_emitters_metadata_function_node_location>>
-    <<meta_emitters_metadata_function_heading>>
-  <<meta_emitters_metadata_function_close>>
-                                                                                /+ abstraction functions emitters ↑ +/
-                                                                                /+ ↓ abstraction functions assertions +/
-  <<abs_functions_assertions>>
-                                                                                /+ abstraction functions assertions ↑ +/
-}                                                                               /+ ← closed: template docAbstraction +/
-<<template_doc_sect_keys_seq>>
-#+END_SRC
-
-** 1. _pre loop process ing_ :pre:
-*** imports :imports:
-
-#+NAME: abs_top_imports
-#+BEGIN_SRC d
-import
-  std.algorithm,
-  std.container,
-  std.file,
-  std.json,
-  std.path;
-import
-  doc_reform.meta,
-  doc_reform.meta.defaults,
-  doc_reform.meta.rgx,
-  doc_reform.meta.metadoc_object_setter,
-  doc_reform.meta.rgx;
-#+END_SRC
-
-*** mixins :mixins:
-
-#+NAME: abs_top_mixins
-#+BEGIN_SRC d
-mixin ObjectSetter;
-mixin InternalMarkup;
-mixin spineRgxIn;
-#+END_SRC
-
-*** initialize :initialize:
-**** declare enum
-
-#+NAME: abs_top_init_struct_enum
-#+BEGIN_SRC d
-@safe static auto eN() {
-  struct _e {
-    enum bi {
-      off,
-      on,
-    }
-    enum ocn {
-      off,
-      on,
-      closing,
-      bkidx,
-      reset,
-    }
-    enum sect {
-      unset,
-      head,
-      toc,
-      substantive,
-      bibliography,
-      glossary,
-      book_index,
-      blurb,
-    }
-    enum txt_is {
-      off,
-      para,
-      heading,
-    }
-    enum blk_is {
-      off,
-      code,
-      poem,
-      block,
-      group,
-      table,
-      quote,
-    }
-    enum blk_state {
-      off,
-      on,
-      closing,
-    }
-    enum blk_delim {
-      off,
-      curly,
-      tic,
-      curly_special,
-      tic_special,
-    }
-  }
-  return _e();
-}
-#+END_SRC
-
-**** initialize general
-
-#+NAME: abs_top_init_struct_general
-#+BEGIN_SRC d
-/+ initialize +/
-ObjGenericComposite[] the_document_toc_section, the_document_head_section, the_document_body_section, the_document_bibliography_section, the_document_glossary_section, the_document_blurb_section, the_document_xml_dom_tail_section;
-string[string] an_object, processing;
-string an_object_key;
-string[] anchor_tags;
-string anchor_tag;
-string anchor_tag_;
-string[string] tag_in_seg;
-string lev_anchor_tag;
-string[string][string] tag_assoc;
-string[] lv0to3_tags;
-/+ enum +/
-enum DocStructMarkupHeading {
-  h_sect_A,
-  h_sect_B,
-  h_sect_C,
-  h_sect_D,
-  h_text_1,
-  h_text_2,
-  h_text_3,
-  h_text_4,
-  h_text_5, // extra level, drop
-  content_non_header
-} // header section A-D; header text 1-4
-enum Status { off, on, }
-enum OCNtype { ocn, non, bkidx, }
-/+ biblio variables +/
-string biblio_tag_name, biblio_tag_entry, st;
-string[] biblio_arr_json;
-string biblio_entry_str_json;
-JSONValue[] bib_arr_json;
-int bib_entry;
-/+ counters +/
-int cntr, previous_count, previous_length;
-bool reset_note_numbers = true;
-int[string] line_occur;
-int html_segnames_ptr = 0;
-int html_segnames_ptr_cntr = 0;
-int verse_line, heading_ptr;
-/+ paragraph attributes +/
-int[string] indent;
-bool bullet = true;
-string content_non_header = "8";
-static auto obj_im = ObjInlineMarkup();
-static auto obj_att = ObjAttributes();
-/+ ocn +/
-struct OCNset {
-  int digit;
-  int object_number;
-  bool off;
-  string identifier;
-  int bkidx;
-  int type;
-}
-OCNset obj_cite_digits;
-int obj_cite_digit_, obj_cite_digit_off, obj_cite_digit_bkidx, obj_cite_digit_type;
-auto object_citation_number = OCNemitter();
-int[] dom_structure_markedup_tags_status         = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-int[] dom_structure_markedup_tags_status_buffer  = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-int[] dom_structure_collapsed_tags_status        = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-int[] dom_structure_collapsed_tags_status_buffer = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-alias TxtPlusHasFootnotes = Tuple!(
-  string, "obj_txt",
-  bool,   "has_notes_reg",
-  bool,   "has_notes_star",
-  bool,   "has_notes_plus",
-);
-alias TxtPlusHasFootnotesUrlsImages = Tuple!(
-  string, "obj_txt",
-  bool,   "has_notes_reg",
-  bool,   "has_notes_star",
-  bool,   "has_notes_plus",
-  bool,   "has_urls",
-  bool,   "has_images_without_dimensions",
-);
-alias TxtAndAnchorTagPlusHasFootnotesUrlsImages = Tuple!(
-   string, "obj_txt",
-   string, "anchor_tag",
-   bool,   "has_notes_reg",
-   bool,   "has_notes_star",
-   bool,   "has_links",
-   bool,   "has_images_without_dimensions",
-);
-enum DomTags { none, open, close, close_and_open, open_still, }
-#+END_SRC
-
-**** method heading ancestors
-
-#+NAME: abs_top_init_generic_object_struct_heading_ancestors
-#+BEGIN_SRC d
-@safe pure ObjGenericComposite obj_heading_ancestors()(
-  ObjGenericComposite  obj,
-  string[]             lv_ancestors_txt,
-) {
-  switch (obj.metainfo.heading_lev_markup) {
-  case 0:
-    lv_ancestors_txt[0] = obj.text.to!string;
-    foreach(k; 1..8) {
-      lv_ancestors_txt[k] = "";
-    }
-    goto default;
-  case 1:
-    lv_ancestors_txt[1] = obj.text.to!string;
-    foreach(k; 2..8) {
-      lv_ancestors_txt[k] = "";
-    }
-    goto default;
-  case 2:
-    lv_ancestors_txt[2] = obj.text.to!string;
-    foreach(k; 3..8) {
-      lv_ancestors_txt[k] = "";
-    }
-    goto default;
-  case 3:
-    lv_ancestors_txt[3] = obj.text.to!string;
-    foreach(k; 4..8) {
-      lv_ancestors_txt[k] = "";
-    }
-    goto default;
-  case 4:
-    lv_ancestors_txt[4] = obj.text.to!string;
-    foreach(k; 5..8) {
-      lv_ancestors_txt[k] = "";
-    }
-    goto default;
-  case 5:
-    lv_ancestors_txt[5] = obj.text.to!string;
-    foreach(k; 6..8) {
-      lv_ancestors_txt[k] = "";
-    }
-    goto default;
-  case 6:
-    lv_ancestors_txt[6] = obj.text.to!string;
-    lv_ancestors_txt[7] = "";
-    goto default;
-  case 7:
-    lv_ancestors_txt[7] = obj.text.to!string;
-    goto default;
-  default:
-    obj.tags.heading_ancestors_text = lv_ancestors_txt.dup;
-  }
-  return obj;
-}
-#+END_SRC
-
-**** method dom markup tags
-
-#+NAME: abs_top_init_generic_object_struct_dom_markup_tags
-#+BEGIN_SRC d
-@safe pure ObjGenericComposite obj_dom_structure_set_markup_tags()(
-  ObjGenericComposite  obj,
-  int[]                dom,
-  int                  lev
-) {
-  foreach (i; 0 .. 8) {
-    if (i < lev) {
-      if (dom[i] == DomTags.open
-         || dom[i] == DomTags.close_and_open
-      ) {
-        dom[i] = DomTags.open_still;
-      } else if (dom[i] == DomTags.close) {
-        dom[i] = DomTags.none;
-      }
-    } else if (i == lev) {
-      if (lev  == 0
-        && dom[i] == DomTags.open_still
-      ) {
-        dom[i] = DomTags.close;
-      } else if (dom[i] == DomTags.open
-        || dom[i] == DomTags.open_still
-        || dom[i] == DomTags.close_and_open
-      ) {
-        dom[i] = DomTags.close_and_open;
-      } else {
-        dom[i] = DomTags.open;
-      }
-    } else if (i > lev) {
-      if (dom[i] == DomTags.close) {
-        dom[i] = DomTags.none;
-      } else if (dom[i] == DomTags.open
-        || dom[i] == DomTags.open_still
-        || dom[i] == DomTags.close_and_open
-      ) {
-        dom[i] = DomTags.close;
-      }
-    }
-  }
-  debug(dom_magic_numbers) {
-    writeln("marked up: ", lev, ": ", dom);
-  }
-  obj.metainfo.dom_structure_markedup_tags_status = dom.dup;
-  return obj;
-}
-#+END_SRC
-
-**** method dom collapsed tags
-
-#+NAME: abs_top_init_generic_object_struct_dom_collapsed_tags
-#+BEGIN_SRC d
-@safe pure ObjGenericComposite obj_dom_set_collapsed_tags()(
-  ObjGenericComposite  obj,
-  int[]                dom,
-  int                  lev
-) {
-  foreach (i; 0 .. 8) {
-    if (i < lev) {
-      if (dom[i] == DomTags.open
-         || dom[i] == DomTags.close_and_open
-      ) {
-        dom[i] = DomTags.open_still;
-      } else if (dom[i] == DomTags.close) {
-        dom[i] = DomTags.none;
-      }
-    } else if (i == lev) {
-      if (lev  == 0
-        && dom[i] == DomTags.open_still
-      ) {
-        dom[i] = DomTags.close;
-      } else if (dom[i] == DomTags.open
-        || dom[i] == DomTags.open_still
-        || dom[i] == DomTags.close_and_open
-      ) {
-        dom[i] = DomTags.close_and_open;
-      } else {
-        dom[i] = DomTags.open;
-      }
-    } else if (i > lev) {
-      if (dom[i] == DomTags.close) {
-        dom[i] = DomTags.none;
-      } else if (dom[i] == DomTags.open
-        || dom[i] == DomTags.open_still
-        || dom[i] == DomTags.close_and_open
-      ) {
-        dom[i] = DomTags.close;
-      }
-    }
-  }
-  debug(dom_magic_numbers) {
-    writeln("collapsed: ", lev, ": ", dom);
-  }
-  obj.metainfo.dom_structure_collapsed_tags_status = dom.dup;
-  return obj;
-}
-#+END_SRC
-
-**** method ocn emit
-
-#+NAME: abs_top_init_ocn_emit
-#+BEGIN_SRC d
-@safe static  OCNset ocn_emit(int ocn_status_flag) {
-  return object_citation_number.ocn_emitter(ocn_status_flag);
-}
-#+END_SRC
-
-**** inline markup faces
-
-#+NAME: abs_top_init_inline_markup_faces
-#+BEGIN_SRC d
-@safe auto inline_markup_faces(L)(L line) {
-  static auto rgx = RgxI();
-  static auto mkup = InlineMarkup();
-  line = replaceAll!(m => mkup.quote_o ~ m[1] ~ mkup.quote_c)(line, rgx.within_quotes);
-  line = replaceAll!(m => "⑆" ~ mkup.mono ~ mkup.ff_o ~ m["text"] ~ mkup.ff_c ~ mkup.mono)(line, rgx.inline_mark_mono);
-  line = replaceAll!(m => "⑆" ~ mkup.cite ~ mkup.ff_o ~ m["text"] ~ mkup.ff_c ~ mkup.cite)(line, rgx.inline_mark_cite);
-  foreach (regx; [rgx.inline_mark_emphasis, rgx.inline_mark_bold, rgx.inline_mark_underscore, rgx.inline_mark_italics, rgx.inline_mark_superscript, rgx.inline_mark_subscript, rgx.inline_mark_strike, rgx.inline_mark_insert]) {
-    line = replaceAll!(m => "⑆" ~ m["mark"] ~ mkup.ff_o ~ m["text"] ~ mkup.ff_c ~ m["mark"])(line, regx);
-  }
-  return line;
-}
-#+END_SRC
-
-**** string links & images
-
-#+NAME: abs_top_init_string_links_and_images
-#+BEGIN_SRC d
-@safe static string links_and_images()(string obj_txt) {
-  static auto rgx = RgxI();
-  static auto mkup = InlineMarkup();
-  if (obj_txt.match(rgx.smid_inline_url_generic)) {
-    if (
-      obj_txt.match(rgx.smid_inline_link_endnote_url_helper)
-      || obj_txt.match(rgx.smid_inline_link_endnote_url_helper_punctuated)
-    ) {
-      obj_txt = replaceAll!(m => format("%s%s%s%s%s%s%s %s%s%s%s%s%s %s%s",
-        mkup.lnk_o, m["content"].strip, mkup.lnk_c,
-        mkup.url_o, m["link"], mkup.url_c,
-        mkup.en_a_o,
-        mkup.lnk_o, m["link"].strip, mkup.lnk_c,
-        mkup.url_o, m["link"], mkup.url_c,
-        mkup.en_a_c,
-        m[3]
-      ))(obj_txt, rgx.smid_inline_link_endnote_url_helper_punctuated);
-      obj_txt = replaceAll!(m => format("%s%s%s%s%s%s%s %s%s%s%s%s%s %s",
-        mkup.lnk_o, m["content"].strip, mkup.lnk_c,
-        mkup.url_o, m["link"], mkup.url_c,
-        mkup.en_a_o,
-        mkup.lnk_o, m["link"].strip, mkup.lnk_c,
-        mkup.url_o, m["link"], mkup.url_c,
-        mkup.en_a_c
-      ))(obj_txt, rgx.smid_inline_link_endnote_url_helper);
-  } else {
-      obj_txt = replaceAll!(m => format("%s%s%s%s%s%s%s",
-        m["pre"],
-        mkup.lnk_o, m["content"].strip, mkup.lnk_c,
-        mkup.url_o, m["link"], mkup.url_c
-      ))(obj_txt, rgx.smid_inline_link_markup_regular);
-    }
-      obj_txt = replaceAll!(m => format("%s%s%s%s%s%s%s",
-        m["pre"],
-        mkup.lnk_o, m["link"].strip, mkup.lnk_c,
-        mkup.url_o, m["link"], mkup.url_c
-      ))(obj_txt, rgx.smid_inline_link_naked_url); //
-  }
-  return obj_txt;
-}
-#+END_SRC
-
-**** trail
-
-#+NAME: abs_top_init_trail
-#+BEGIN_SRC d
-/+ book index variables +/
-string book_idx_tmp;
-string[][string][string] bookindex_unordered_hashes;
-/+ node +/
-ObjGenericComposite comp_obj_heading, comp_obj_location, comp_obj_block, comp_obj_code, comp_obj_poem_ocn, comp_obj_comment;
-auto node_construct = NodeStructureMetadata();
-enum sObj { content, anchor_tag, notes_reg, notes_star, links, image_no_dimensions }
-#+END_SRC
-
-*** inline para tag associations
-
-#+NAME: abs_inline_para_tag_associations
-#+BEGIN_SRC d
-@safe string[string][string] inline_para_link_anchor()(
-  string[string]          an_object,
-  string[string]          tag_in_seg,
-  string[string][string]  tag_assoc
-) {
-  static auto rgx = RgxI();
-  if (auto m = an_object["substantive"].match(rgx.inline_link_anchor)) {
-    if (m.captures[1] !in tag_assoc) {
-      tag_assoc[(m.captures[1])]["seg_lv4"]    = tag_in_seg["seg_lv4"];
-      tag_assoc[(m.captures[1])]["seg_lv1to4"] = tag_in_seg["seg_lv1to4"];
-    } else {
-      writeln("a tag named  already exists, check text line\n    ", an_object["substantive"]);
-    }
-  }
-  return tag_assoc;
-}
-#+END_SRC
-
-*** scope
-
-#+NAME: abs_init_rest_0
-#+BEGIN_SRC d
-scope(success) {
-}
-scope(failure) {
-}
-scope(exit) {
-  destroy(the_document_toc_section);
-  destroy(the_document_head_section);
-  destroy(the_document_body_section);
-  destroy(the_document_bibliography_section);
-  destroy(the_document_glossary_section);
-  destroy(the_document_blurb_section);
-  destroy(the_document_xml_dom_tail_section);
-  destroy(an_object);
-  destroy(processing);
-  destroy(biblio_arr_json);
-  previous_length = 0;
-  reset_note_numbers = true;
-  lev_anchor_tag = "";
-  anchor_tag = "";
-  // dom_structure_collapsed_tags_status        = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-  // dom_structure_markedup_tags_status_buffer  = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-  // dom_structure_collapsed_tags_status_buffer = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-}
-#+END_SRC
-
-*** init rest
-
-#+NAME: abs_init_rest_1
-#+BEGIN_SRC d
-mixin spineNode;
-auto node_para_int_    = node_metadata_para_int;
-auto node_para_str_    = node_metadata_para_str;
-ObjGenericComposite comp_obj_heading_, comp_obj_para, comp_obj_toc;
-line_occur = [
-  "heading"  : 0,
-  "para"     : 0,
-  "glossary" : 0,
-  "blurb"    : 0,
-];
-uint[string] dochas = [
-  "inline_links"      : 0,
-  "inline_notes"      : 0,
-  "inline_notes_star" : 0,
-  "codeblock"         : 0,
-  "table"             : 0,
-  "block"             : 0,
-  "group"             : 0,
-  "poem"              : 0,
-  "quote"             : 0,
-  "images"            : 0,
-];
-uint[string] pith = [
-  "ocn"                            : 1,
-  "section"                        : 0,
-  "txt_is"                         : 0,
-  "block_is"                       : 0,
-  "block_state"                    : 0,
-  "block_delim"                    : 0,
-  "make_headings"                  : 0,
-  "dummy_heading_status"           : 0,
-  "dummy_heading_multiple_objects" : 0,
-  "no_ocn_multiple_objects"        : 0,
-  "verse_new"                      : 0,
-];
-string[string] object_number_poem = [
-  "start" : "",
-  "end"   : ""
-];
-string[] lv_ancestors_txt = [ "", "", "", "", "", "", "", "", ];
-int[string] lv = [
-  "lv" : eN.bi.off,
-  "h0" : eN.bi.off,
-  "h1" : eN.bi.off,
-  "h2" : eN.bi.off,
-  "h3" : eN.bi.off,
-  "h4" : eN.bi.off,
-  "h5" : eN.bi.off,
-  "h6" : eN.bi.off,
-  "h7" : eN.bi.off,
-  "lev_int_collapsed" : 0,
-];
-int[string] collapsed_lev = [
-  "h0" : eN.bi.off,
-  "h1" : eN.bi.off,
-  "h2" : eN.bi.off,
-  "h3" : eN.bi.off,
-  "h4" : eN.bi.off,
-  "h5" : eN.bi.off,
-  "h6" : eN.bi.off,
-  "h7" : eN.bi.off
-];
-string[string] heading_match_str = [
-  "h_A": "^(none)",
-  "h_B": "^(none)",
-  "h_C": "^(none)",
-  "h_D": "^(none)",
-  "h_1": "^(none)",
-  "h_2": "^(none)",
-  "h_3": "^(none)",
-  "h_4": "^(none)"
-];
-Regex!char[string] heading_match_rgx = [
-  "h_A": regex(r"^(none)"),
-  "h_B": regex(r"^(none)"),
-  "h_C": regex(r"^(none)"),
-  "h_D": regex(r"^(none)"),
-  "h_1": regex(r"^(none)"),
-  "h_2": regex(r"^(none)"),
-  "h_3": regex(r"^(none)"),
-  "h_4": regex(r"^(none)")
-];
-string _anchor_tag;
-string toc_txt_;
-an_object["glossary_nugget"]                                   = "";
-an_object["blurb_nugget"]                                      = "";
-comp_obj_heading_                                              = comp_obj_heading_.init;
-comp_obj_heading_.metainfo.is_of_part                          = "frontmatter";
-comp_obj_heading_.metainfo.is_of_section                       = "toc";
-comp_obj_heading_.metainfo.is_of_type                          = "para";
-comp_obj_heading_.metainfo.is_a                                = "heading";
-comp_obj_heading_.text                                         = "Table of Contents";
-comp_obj_heading_.metainfo.ocn                                 = 0;
-comp_obj_heading_.metainfo.identifier                          = "";
-comp_obj_heading_.metainfo.dummy_heading                       = false;
-comp_obj_heading_.metainfo.object_number_off                   = true;
-comp_obj_heading_.metainfo.object_number_type                  = 0;
-comp_obj_heading_.tags.segment_anchor_tag_epub                 = "toc";
-comp_obj_heading_.tags.anchor_tag_html                         = comp_obj_heading_.tags.segment_anchor_tag_epub;
-comp_obj_heading_.tags.in_segment_html                         = comp_obj_heading_.tags.anchor_tag_html;
-comp_obj_heading_.metainfo.heading_lev_markup                  = 4;
-comp_obj_heading_.metainfo.heading_lev_collapsed               = 1;
-comp_obj_heading_.metainfo.parent_ocn                          = 1;
-comp_obj_heading_.metainfo.parent_lev_markup                   = 0;
-comp_obj_heading_.ptr.html_segnames                            = html_segnames_ptr;
-comp_obj_heading_.tags.anchor_tags                             = ["toc"];
-comp_obj_heading_.metainfo.dom_structure_markedup_tags_status  = [ 1, 1, 0, 0, 1, 0, 0, 0];
-comp_obj_heading_.metainfo.dom_structure_collapsed_tags_status = [ 1, 1, 1, 0, 0, 0, 0, 0];
-tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-auto toc_head                                                  = comp_obj_heading_;
-html_segnames_ptr_cntr++;
-the_document_toc_section = [toc_head];
-static auto mkup = InlineMarkup();
-static auto munge = ObjInlineMarkupMunge();
-auto note_section = NotesSection();
-auto bookindex_extract_hash = BookIndexNuggetHash();
-string[][string] lev4_subtoc;
-string[][string] segnames = ["html": ["toc"], "epub": ["toc"]];
-int cnt1 = 1; int cnt2 = 1; int cnt3 = 1;
-#+END_SRC
-
-*** make tests
-
-#+NAME: make_tests
-#+BEGIN_SRC d
-enum Substitute { match, markup, }
-debug (substitutions) {
-  writeln(__LINE__, ":", __FILE__, ": DEBUG substitutions:");
-  if (!(conf_make_meta.make.headings.empty)) {
-    writeln(conf_make_meta.make.headings);
-  }
-  if (conf_make_meta.make.substitute) {
-    foreach(substitution_pair; conf_make_meta.make.substitute) {
-       writeln("regex to match:       ", substitution_pair[Substitute.match]);
-       writeln("substitution to make: ", substitution_pair[Substitute.markup]);
-    }
-  }
-  if (conf_make_meta.make.bold) {
-    writeln("regex to match:       ", conf_make_meta.make.bold[Substitute.match]);
-    writeln("substitution to make: ", conf_make_meta.make.bold[Substitute.markup]);
-  }
-  if (conf_make_meta.make.emphasis) {
-    writeln("regex to match:       ", conf_make_meta.make.emphasis[Substitute.match]);
-    writeln("substitution to make: ", conf_make_meta.make.emphasis[Substitute.markup]);
-  }
-  if (conf_make_meta.make.italics) {
-    writeln("regex to match:       ", conf_make_meta.make.italics[Substitute.match]);
-    writeln("substitution to make: ", conf_make_meta.make.italics[Substitute.markup]);
-  }
-}
-#+END_SRC
-
-** 2. ↻ *LOOP* _loop: process document body_ :loop:document:
-*** Loop scope :scope:
-
-#+NAME: abs_in_loop_body_00_0
-#+BEGIN_SRC d
-/+ scope +/
-scope(exit) {
-}
-scope(failure) {
-  stderr.writefln(
-    "%s\n%s\n%s:%s failed here:\n  line: %s",
-    __MODULE__, __FUNCTION__,
-    __FILE__, __LINE__,
-    line,
-  );
-}
-debug(source) {
-  writeln(line);
-}
-debug(srclines) {
-  if (!line.empty) {
-    writefln(
-      "* %s",
-      line
-    );
-  }
-}
-#+END_SRC
-
-*** check whether object number is on or turned off :ocn:
-
-#+NAME: abs_in_loop_body_00_1
-#+BEGIN_SRC d
-if (!line.empty) {
-  pith = line._check_ocn_status_(pith);
-}
-#+END_SRC
-
-*** separate _code blocks_ from _other markup text_ [+5] [#A]
-**** _code blocks_ :block:code:
-
-#+NAME: abs_in_loop_body_00_code_block
-#+BEGIN_SRC d
-/+ block object: code +/
-line.flow_txt_block_code(an_object, pith);
-continue;
-#+END_SRC
-
-**** _non code objects_ (non-code blocks & regular text: by line) [+4] :non_code:
-***** inline fontface markup
-
-#+NAME: abs_in_loop_body_non_code_obj_fontface_markup
-#+BEGIN_SRC d
-line = line.inline_markup_faces; // by text line (rather than by text object), linebreaks in para problematic
-#+END_SRC
-
-***** in section (biblio, glossary, blurb) +(block group)+ [+1] :block:
-****** in section: biblio :biblio:
-
-#+NAME: abs_in_loop_body_non_code_obj_in_biblio
-#+BEGIN_SRC d
-if (line.matchFirst(rgx.heading_biblio)
-|| (pith["section"] == eN.sect.bibliography
-  && ((!(line.matchFirst(rgx.heading_glossary)))
-  && (!(line.matchFirst(rgx.heading_blurb)))
-  && (!(line.matchFirst(rgx.heading)))
-  && (!(line.matchFirst(rgx.comment)))))
-) {
-  pith["section"] = eN.sect.bibliography;
-  if (opt_action.backmatter && opt_action.section_biblio) {
-    line.flow_txt_block_biblio(pith, bib_entry, biblio_entry_str_json, biblio_arr_json);
-    debug(bibliobuild) {
-      writeln("-  ", biblio_entry_str_json);
-      writeln("-> ", biblio_arr_json.length);
-    }
-  }
-  continue;
-#+END_SRC
-
-****** in section: glossary :glossary:
-
-if there is a glossary section you need to:
-- extract it
-- create standard headings
-- markup contents in standard way like regular paragraphs
-  - need indentation and regular paragraph inline markup
-- reconstitute the document with the glossary section following the endnotes
-
-#+NAME: abs_in_loop_body_non_code_obj_in_glossary
-#+BEGIN_SRC d
-} else if (line.matchFirst(rgx.heading_glossary)
-|| (pith["section"] == eN.sect.glossary
-  && ((!(line.matchFirst(rgx.heading_biblio)))
-  && (!(line.matchFirst(rgx.heading_blurb)))
-  && (!(line.matchFirst(rgx.heading)))
-  && (!(line.matchFirst(rgx.comment)))))
-) {
-  /+ within section (block object): glossary +/
-  debug(glossary) {
-    writeln(__LINE__);
-    writeln(line);
-  }
-  pith["section"] = eN.sect.glossary;
-  if (opt_action.backmatter && opt_action.section_glossary) {
-    indent = [
-      "hang_position" : 0,
-      "base_position" : 0,
-    ];
-    bullet = false;
-    pith["txt_is"]           = eN.txt_is.para;
-    line_occur["para"]       = eN.bi.off;
-    an_object_key = "glossary_nugget";
-    if (line.matchFirst(rgx.heading_glossary)) {
-      {
-        comp_obj_heading_                                = comp_obj_heading_.init;
-        comp_obj_heading_.metainfo.is_of_part            = "backmatter";
-        comp_obj_heading_.metainfo.is_of_section         = "glossary";
-        comp_obj_heading_.metainfo.is_of_type            = "para";
-        comp_obj_heading_.metainfo.is_a                  = "heading";
-        comp_obj_heading_.text                           = "Glossary";
-        comp_obj_heading_.metainfo.ocn                   = 0;
-        comp_obj_heading_.metainfo.identifier            = "";
-        comp_obj_heading_.metainfo.dummy_heading         = false;
-        comp_obj_heading_.metainfo.object_number_off     = false;
-        comp_obj_heading_.metainfo.object_number_type    = 0;
-        comp_obj_heading_.tags.segment_anchor_tag_epub   = "_part_glossary";
-        comp_obj_heading_.tags.anchor_tag_html           = comp_obj_heading_.tags.segment_anchor_tag_epub;
-        comp_obj_heading_.tags.in_segment_html           = "glossary";
-        comp_obj_heading_.tags.anchor_tags               = ["section_glossary"];
-        comp_obj_heading_.metainfo.heading_lev_markup    = 1;
-        comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
-        comp_obj_heading_.metainfo.parent_ocn            = 1;
-        comp_obj_heading_.metainfo.parent_lev_markup     = 0;
-        comp_obj_heading_.metainfo.dom_structure_markedup_tags_status  = [ 1, 1, 0, 0, 0, 0, 0, 0];
-        comp_obj_heading_.metainfo.dom_structure_collapsed_tags_status = [ 1, 1, 0, 0, 0, 0, 0, 0];
-        the_document_glossary_section                    ~= comp_obj_heading_;
-        tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-        tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      }
-      {
-        comp_obj_heading_                                = comp_obj_heading_.init;
-        comp_obj_heading_.metainfo.is_of_part            = "backmatter";
-        comp_obj_heading_.metainfo.is_of_section         = "glossary";
-        comp_obj_heading_.metainfo.is_of_type            = "para";
-        comp_obj_heading_.metainfo.is_a                  = "heading";
-        comp_obj_heading_.text                           = "Glossary";
-        comp_obj_heading_.metainfo.ocn                   = 0;
-        comp_obj_heading_.metainfo.identifier            = "";
-        comp_obj_heading_.metainfo.dummy_heading         = true;
-        comp_obj_heading_.metainfo.object_number_off     = true;
-        comp_obj_heading_.metainfo.object_number_type    = 0;
-        comp_obj_heading_.tags.segment_anchor_tag_epub   = "glossary";
-        comp_obj_heading_.tags.anchor_tag_html           = comp_obj_heading_.tags.segment_anchor_tag_epub;
-        comp_obj_heading_.tags.in_segment_html           = comp_obj_heading_.tags.anchor_tag_html;
-        comp_obj_heading_.metainfo.heading_lev_markup    = 4;
-        comp_obj_heading_.metainfo.heading_lev_collapsed = 2;
-        comp_obj_heading_.metainfo.parent_ocn            = 1;
-        comp_obj_heading_.metainfo.parent_lev_markup     = 0;
-        comp_obj_heading_.metainfo.dom_structure_markedup_tags_status  = [ 1, 1, 0, 0, 1, 0, 0, 0];
-        comp_obj_heading_.metainfo.dom_structure_collapsed_tags_status = [ 1, 1, 1, 0, 0, 0, 0, 0];
-        comp_obj_heading_.tags.anchor_tags               = ["glossary"];
-        the_document_glossary_section                    ~= comp_obj_heading_;
-        tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-        tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      }
-    } else {
-      an_object = line.flow_para_match_(an_object, an_object_key, indent, bullet, pith, line_occur);
-      comp_obj_para                               = comp_obj_para.init;
-      comp_obj_para.metainfo.is_of_part           = "backmatter";
-      comp_obj_para.metainfo.is_of_section        = "glossary";
-      comp_obj_para.metainfo.is_of_type           = "para";
-      comp_obj_para.metainfo.is_a                 = "glossary";
-      comp_obj_para.text                          = links_and_images(line.to!string.strip).replaceFirst(rgx.para_attribs, "");
-      comp_obj_para.metainfo.ocn                  = 0;
-      comp_obj_para.metainfo.identifier           = "";
-      comp_obj_para.metainfo.object_number_off    = true;
-      comp_obj_para.metainfo.object_number_type   = 0;
-      comp_obj_para.attrib.indent_hang            = indent["hang_position"];
-      comp_obj_para.attrib.indent_base            = indent["base_position"];
-      comp_obj_para.attrib.bullet                 = bullet;
-      the_document_glossary_section               ~= comp_obj_para;
-    }
-    pith["ocn"] = eN.ocn.on;
-  }
-  continue;
-#+END_SRC
-
-****** in section: blurb :blurb:
-
-if there is a blurb section you need to:
-- extract it
-- create standard headings (or use line provided in 1~ heading)
-- markup contents in standard way like regular paragraphs
-  - need regular paragraph inline markup
-- reconstitute the document with the blurb section at the very end of the doucment
-
-#+NAME: abs_in_loop_body_non_code_obj_in_blurb
-#+BEGIN_SRC d
-} else if (line.matchFirst(rgx.heading_blurb)
-|| (pith["section"] == eN.sect.blurb
-  && ((!(line.matchFirst(rgx.heading_glossary)))
-  && (!(line.matchFirst(rgx.heading_biblio)))
-  && (!(line.matchFirst(rgx.heading)))
-  && (!(line.matchFirst(rgx.comment)))))
-) {
-  pith["section"] = eN.sect.blurb;
-  debug(blurb) {
-    writeln(__LINE__);
-    writeln(line);
-  }
-  if (opt_action.backmatter && opt_action.section_blurb) {
-    indent = [
-      "hang_position" : 0,
-      "base_position" : 0,
-    ];
-    bullet = false;
-    if (auto m = line.matchFirst(rgx.para_indent)) {
-      debug(paraindent) {
-        writeln(line);
-      }
-      indent["hang_position"] = (m["indent"]).to!int;
-      indent["base_position"] = (m["indent"]).to!int;
-    } else if (line.matchFirst(rgx.para_bullet)) {
-      debug(parabullet) {
-        writeln(line);
-      }
-      bullet = true;
-    } else if (auto m = line.matchFirst(rgx.para_indent_hang)) {
-      debug(paraindenthang) {
-        writeln(line);
-      }
-      indent = [
-        "hang_position" : (m["hang"]).to!int,
-        "base_position" : (m["indent"]).to!int,
-      ];
-    } else if (auto m = line.matchFirst(rgx.para_bullet_indent)) {
-      debug(parabulletindent) {
-        writeln(line);
-      }
-      indent = [
-        "hang_position" : (m["indent"]).to!int,
-        "base_position" : (m["indent"]).to!int,
-      ];
-      bullet = true;
-    }
-    pith["txt_is"]           = eN.txt_is.para;
-    line_occur["para"]       = eN.bi.off;
-    an_object_key = "blurb_nugget";
-    if (line.matchFirst(rgx.heading_blurb)) {
-      {
-        comp_obj_heading_                                              = comp_obj_heading_.init;
-        comp_obj_heading_.metainfo.is_of_part                          = "backmatter";
-        comp_obj_heading_.metainfo.is_of_section                       = "blurb";
-        comp_obj_heading_.metainfo.is_of_type                          = "para";
-        comp_obj_heading_.metainfo.is_a                                = "heading";
-        comp_obj_heading_.text                                         = "Blurb";
-        comp_obj_heading_.metainfo.ocn                                 = 0;
-        comp_obj_heading_.metainfo.identifier                          = "";
-        comp_obj_heading_.metainfo.dummy_heading                       = false;
-        comp_obj_heading_.metainfo.object_number_off                   = false;
-        comp_obj_heading_.metainfo.object_number_type                  = 0;
-        comp_obj_heading_.tags.segment_anchor_tag_epub                 = "_part_blurb";
-        comp_obj_heading_.tags.anchor_tag_html                         = comp_obj_heading_.tags.segment_anchor_tag_epub;
-        comp_obj_heading_.tags.in_segment_html                         = "blurb";
-        comp_obj_heading_.tags.anchor_tags                             = ["section_blurb"];
-        comp_obj_heading_.metainfo.heading_lev_markup                  = 1;
-        comp_obj_heading_.metainfo.heading_lev_collapsed               = 1;
-        comp_obj_heading_.metainfo.parent_ocn                          = 1;
-        comp_obj_heading_.metainfo.parent_lev_markup                   = 0;
-        comp_obj_heading_.metainfo.dom_structure_markedup_tags_status  = [ 1, 1, 0, 0, 0, 0, 0, 0];
-        comp_obj_heading_.metainfo.dom_structure_collapsed_tags_status = [ 1, 1, 0, 0, 0, 0, 0, 0];
-        the_document_blurb_section                                     ~= comp_obj_heading_;
-        tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-        tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      }
-      {
-        comp_obj_heading_                                              = comp_obj_heading_.init;
-        comp_obj_heading_.metainfo.is_of_part                          = "backmatter";
-        comp_obj_heading_.metainfo.is_of_section                       = "blurb";
-        comp_obj_heading_.metainfo.is_of_type                          = "para";
-        comp_obj_heading_.metainfo.is_a                                = "heading";
-        comp_obj_heading_.text                                         = "Blurb";
-        comp_obj_heading_.metainfo.ocn                                 = 0;
-        comp_obj_heading_.metainfo.identifier                          = "";
-        comp_obj_heading_.metainfo.dummy_heading                       = true;
-        comp_obj_heading_.metainfo.object_number_off                   = true;
-        comp_obj_heading_.metainfo.object_number_type                  = 0;
-        comp_obj_heading_.tags.segment_anchor_tag_epub                 = "blurb";
-        comp_obj_heading_.tags.anchor_tag_html                         = comp_obj_heading_.tags.segment_anchor_tag_epub;
-        comp_obj_heading_.tags.in_segment_html                         = comp_obj_heading_.tags.anchor_tag_html;
-        comp_obj_heading_.metainfo.heading_lev_markup                  = 4;
-        comp_obj_heading_.metainfo.heading_lev_collapsed               = 2;
-        comp_obj_heading_.metainfo.parent_ocn                          = 1;
-        comp_obj_heading_.metainfo.parent_lev_markup                   = 0;
-        comp_obj_heading_.tags.anchor_tags                             = ["blurb"];
-        comp_obj_heading_.metainfo.dom_structure_markedup_tags_status  = [ 1, 1, 0, 0, 1, 0, 0, 0];
-        comp_obj_heading_.metainfo.dom_structure_collapsed_tags_status = [ 1, 1, 1, 0, 0, 0, 0, 0];
-        the_document_blurb_section                                     ~= comp_obj_heading_;
-        tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-        tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      }
-    } else if (line.matchFirst(rgx.headings)
-    && (opt_action.backmatter && opt_action.section_blurb)) {
-      comp_obj_heading_                                              = comp_obj_heading_.init;
-      comp_obj_heading_.metainfo.is_of_part                          = "backmatter";
-      comp_obj_heading_.metainfo.is_of_section                       = "blurb";
-      comp_obj_heading_.metainfo.is_of_type                          = "para";
-      comp_obj_heading_.metainfo.is_a                                = "heading";
-      comp_obj_heading_.text                                         = line.to!string;
-      comp_obj_heading_.metainfo.ocn                                 = 0;
-      comp_obj_heading_.metainfo.identifier                          = "";
-      comp_obj_heading_.metainfo.dummy_heading                       = false;
-      comp_obj_heading_.metainfo.object_number_off                   = true;
-      comp_obj_heading_.metainfo.object_number_type                  = 0;
-      comp_obj_heading_.tags.segment_anchor_tag_epub                 = "blurb";
-      comp_obj_heading_.tags.anchor_tag_html                         = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      comp_obj_heading_.tags.in_segment_html                         = comp_obj_heading_.tags.anchor_tag_html;
-      comp_obj_heading_.metainfo.heading_lev_markup                  = an_object["lev_markup_number"].to!int;    // make int, remove need to conv
-      comp_obj_heading_.metainfo.heading_lev_collapsed               = an_object["lev_collapsed_number"].to!int; // make int, remove need to conv
-      comp_obj_heading_.metainfo.parent_ocn                          = 1;
-      comp_obj_heading_.metainfo.parent_lev_markup                   = 0;
-      the_document_blurb_section                                     ~= comp_obj_heading_;
-      tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-      tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-    } else if (!(line.empty)) {
-      an_object = line.flow_para_match_(an_object, an_object_key, indent, bullet, pith, line_occur);
-      comp_obj_para                               = comp_obj_para.init;
-      comp_obj_para.metainfo.is_of_part           = "backmatter";
-      comp_obj_para.metainfo.is_of_section        = "blurb";
-      comp_obj_para.metainfo.is_of_type           = "para";
-      comp_obj_para.metainfo.is_a                 = "blurb";
-      comp_obj_para.text                          = links_and_images(line.to!string.strip).replaceFirst(rgx.para_attribs, "");
-      comp_obj_para.metainfo.ocn                  = 0;
-      comp_obj_para.metainfo.identifier           = "";
-      comp_obj_para.metainfo.object_number_off    = true;
-      comp_obj_para.metainfo.object_number_type   = 0;
-      comp_obj_para.attrib.indent_hang            = indent["hang_position"];
-      comp_obj_para.attrib.indent_base            = indent["base_position"];
-      comp_obj_para.has.inline_links              = true;
-      comp_obj_para.attrib.bullet                 = bullet;
-      the_document_blurb_section                  ~= comp_obj_para;
-    }
-    pith["ocn"] = eN.ocn.on;
-  }
-  continue;
-#+END_SRC
-
-***** in blocks [+1] :block:
-
-#+NAME: abs_in_loop_body_non_code_obj_in_block
-#+BEGIN_SRC d
-} else if (pith["block_state"] == eN.blk_state.on) {
-#+END_SRC
-
-****** in block: quote :quote:
-
-#+NAME: abs_in_loop_body_non_code_obj_in_block_quote
-#+BEGIN_SRC d
-if (pith["block_is"]    == eN.blk_is.quote) {
-  line = line
-    ._doc_header_and_make_substitutions_(conf_make_meta)
-    ._doc_header_and_make_substitutions_fontface_(conf_make_meta);
-  an_object = line.flow_txt_block_quote(an_object, pith);
-  continue;
-#+END_SRC
-
-****** in block: group :group:
-
-#+NAME: abs_in_loop_body_non_code_obj_in_block_group
-#+BEGIN_SRC d
-} else if (pith["block_is"]    == eN.blk_is.group) {
-  line = line
-    ._doc_header_and_make_substitutions_(conf_make_meta)
-    ._doc_header_and_make_substitutions_fontface_(conf_make_meta)
-    .replaceAll(rgx.para_delimiter, mkup.br_line_spaced ~ "$1");
-  an_object = line.flow_txt_block_group(an_object, pith);
-  continue;
-#+END_SRC
-
-****** in block: block :block:
-
-#+NAME: abs_in_loop_body_non_code_obj_in_block_block
-#+BEGIN_SRC d
-} else if (pith["block_is"]    == eN.blk_is.block) {
-  line = line
-    ._doc_header_and_make_substitutions_(conf_make_meta)
-    ._doc_header_and_make_substitutions_fontface_(conf_make_meta);
-  if (auto m = line.match(rgx.spaces_keep)) {
-    line = line
-      .replaceAll(rgx.spaces_keep, (m.captures[1]).translate([ ' ' : mkup.nbsp ]));
-  }
-  an_object = line.flow_txt_block_block(an_object, pith);
-  continue;
-#+END_SRC
-
-****** in block: poem :poem:
-
-#+NAME: abs_in_loop_body_non_code_obj_in_block_poem
-#+BEGIN_SRC d
-} else if (pith["block_is"]    == eN.blk_is.poem) {
-  an_object = line.flow_txt_block_poem(an_object, pith, cntr, object_number_poem, conf_make_meta, tag_in_seg);
-  continue;
-#+END_SRC
-
-****** in block: table :table:
-
-#+NAME: abs_in_loop_body_non_code_obj_in_block_table
-#+BEGIN_SRC d
-} else if (pith["block_is"]    == eN.blk_is.table) {
-  an_object = line.flow_txt_block_table(an_object, pith, conf_make_meta);
-  continue;
-}
-#+END_SRC
-
-***** not identified as being within block group (could still be, or not) [+3]
-****** assert
-
-#+NAME: abs_in_loop_body_open_block_obj_assert
-#+BEGIN_SRC d
-assert(
-  (pith["block_state"] == eN.blk_state.off)
-  || (pith["block_state"] == eN.blk_state.closing),
-  "block status: none or closed"
-);
-#+END_SRC
-
-****** catch misc +block open+
-
-#+NAME: abs_in_loop_body_open_block_obj
-#+BEGIN_SRC d
-if (line.matchFirst(rgx.block_poem_open)) {                                    /+ poem to verse exceptions! +/
-  object_reset(an_object);
-  processing.remove("verse");
-  object_number_poem["start"] = obj_cite_digits.object_number.to!string;
-}
-line.flow_txt_block_start(pith, dochas, object_number_poem);
-continue;
-#+END_SRC
-
-****** line not empty [+2]
-******* asserts :assert:
-
-#+NAME: abs_in_loop_body_not_block_obj_assert
-#+BEGIN_SRC d
-assert(
-  !line.empty,
-  "line tested, line not empty surely:\n  \"" ~ line ~ "\""
-);
-assert(
-  (pith["block_state"] == eN.blk_state.off)
-  || (pith["block_state"] == eN.blk_state.closing),
-  "code block status: none or closed"
-);
-if (pith["block_state"] == eN.blk_state.closing) {
-  debug(check) {
-    writeln(__LINE__);
-    writeln(line);
-  }
-  assert(
-    line.matchFirst(rgx.book_index_item)
-    || line.matchFirst(rgx.book_index_item_open)
-    || pith["section"] == eN.sect.book_index,
-    "\nblocks closed, unless followed by book index, non-matching line:\n  \""
-    ~ line ~ "\""
-  );
-}
-#+END_SRC
-
-******* book index :bookindex:
-
-#+NAME: abs_in_loop_body_not_block_obj_bookindex
-#+BEGIN_SRC d
-if (line.matchFirst(rgx.book_index_item)
-|| line.matchFirst(rgx.book_index_item_open)
-|| pith["section"] == eN.sect.book_index)  {                            /+ book_index +/
-  an_object = line.flow_book_index_(an_object, book_idx_tmp, pith, opt_action);
-#+END_SRC
-
-******* not book index [+1]
-
-#+NAME: abs_in_loop_body_not_block_obj_not_bookindex
-#+BEGIN_SRC d
-} else {                                                                       /+ not book_index +/
-#+END_SRC
-
-******** matched: comment :comment:match:
-
-#+NAME: abs_in_loop_body_not_block_obj_not_bookindex_a_comment
-#+BEGIN_SRC d
-an_object_key = "body_nugget";
-if (auto m = line.matchFirst(rgx.comment)) {                                 /+ matched comment +/
-  debug(comment) {
-    writeln(line);
-  }
-  an_object[an_object_key]                ~= line ~= "\n";
-  comp_obj_comment                        = comp_obj_comment.init;
-  comp_obj_comment.metainfo.is_of_part    = "comment"; // breaks flow
-  comp_obj_comment.metainfo.is_of_section = "comment"; // breaks flow
-  comp_obj_comment.metainfo.is_of_type    = "comment";
-  comp_obj_comment.metainfo.is_a          = "comment";
-  comp_obj_comment.text                   = an_object[an_object_key].strip;
-  the_document_body_section               ~= comp_obj_comment;
-  flow_common_reset_(line_occur, an_object, pith);
-  processing.remove("verse");
-  ++cntr;
-#+END_SRC
-
-******** flag !set & line !exist: heading or para :heading:paragraph:
-
-#+NAME: abs_in_loop_body_not_block_obj_not_bookindex_a_para_type
-#+BEGIN_SRC d
-} else if ((line_occur["para"] == eN.bi.off
-  && line_occur["heading"] == eN.bi.off)
-  && pith["txt_is"] == eN.txt_is.off
-) {                             /+ heading or para but neither flag nor line exists +/
-  if ((conf_make_meta.make.headings.length > 2)
-  && (pith["make_headings"] == eN.bi.off)) {                      /+ heading found +/
-    heading_match_str = line.flow_heading_found_(heading_match_str, conf_make_meta.make.headings, heading_match_rgx, pith);
-  }
-  if (pith["make_headings"] == eN.bi.on
-    && (line_occur["para"] == eN.bi.off
-    && line_occur["heading"] == eN.bi.off)
-    && pith["txt_is"] == eN.txt_is.off
-  ) {                           /+ heading make set +/
-    line = line.flow_heading_make_set_(line_occur, heading_match_rgx, pith);
-  }
-  /+ TODO node info: all headings identified at this point,
-     - extract node info here??
-     - how long can it wait?
-     - should be incorporated in composite objects
-     - should happen before endnote links set (they need to be moved down?)
-  +/
-  if (line.matchFirst(rgx.headings)) {                                        /+ heading match +/
-    line = line._doc_header_and_make_substitutions_(conf_make_meta);
-    an_object = line.flow_heading_matched_(
-      an_object,
-      line_occur,
-      an_object_key,
-      lv,
-      collapsed_lev,
-      pith,
-      conf_make_meta,
-    );
-  } else if (line_occur["para"] == eN.bi.off) {                              /+ para match +/
-    an_object_key = "body_nugget";
-    line = line
-      ._doc_header_and_make_substitutions_(conf_make_meta)
-      ._doc_header_and_make_substitutions_fontface_(conf_make_meta);
-    an_object = line.flow_para_match_(an_object, an_object_key, indent, bullet, pith, line_occur);
-  }
-#+END_SRC
-
-******** line exist: heading :heading:
-
-#+NAME: abs_in_loop_body_not_block_obj_not_bookindex_a_heading
-#+BEGIN_SRC d
-} else if (line_occur["heading"] > eN.bi.off) {                              /+ heading +/
-  debug(heading) {
-    writeln(line);
-  }
-  an_object[an_object_key] ~= line ~= "\n";
-  ++line_occur["heading"];
-#+END_SRC
-
-******** line exist: para :para:
-
-#+NAME: abs_in_loop_body_not_block_obj_not_bookindex_a_para
-#+BEGIN_SRC d
-} else if (line_occur["para"] > eN.bi.off) {                                 /+ paragraph +/
-  debug(para) {
-    writeln(an_object_key, "-> ", line);
-  }
-  line = line
-    ._doc_header_and_make_substitutions_(conf_make_meta)
-    ._doc_header_and_make_substitutions_fontface_(conf_make_meta);
-  an_object[an_object_key] ~= " " ~ line;
-  ++line_occur["para"];
-}
-#+END_SRC
-
-******** not book index close
-
-#+NAME: abs_in_loop_body_not_block_obj_not_bookindex_close
-#+BEGIN_SRC d
-}
-#+END_SRC
-
-****** line empty, with block flag
-
-#+NAME: abs_in_loop_body_not_block_obj_line_empty_blocks_flags
-#+BEGIN_SRC d
-an_object = line.flow_block_flag_line_empty_(
-  an_object,
-  bookindex_extract_hash,
-  the_document_body_section,
-  bookindex_unordered_hashes,
-  obj_cite_digits,
-  comp_obj_heading,
-  cntr,
-  pith,
-  object_number_poem,
-  conf_make_meta,
-  tag_in_seg,
-);
-#+END_SRC
-
-****** line empty [+1]
-******* assert line empty :assert:
-
-#+NAME: abs_in_loop_body_not_block_obj_line_empty_assert
-#+BEGIN_SRC d
-assert(
-  line.empty,
-  "\nline should be empty:\n  \""
-  ~ line ~ "\""
-);
-assert(
-  (pith["block_state"] == eN.blk_state.off),
-  "code block status: none"
-);
-#+END_SRC
-
-******* heading object :heading:object:
-
-#+NAME: abs_in_loop_body_not_block_obj_line_empty_heading_obj
-#+BEGIN_SRC d
-if (_new_doc) {
-  tag_assoc   = tag_assoc.init;
-  lv0to3_tags = lv0to3_tags.init;
-  tag_in_seg  = tag_in_seg.init;
-}
-if (pith["txt_is"] == eN.txt_is.heading
-  && line_occur["heading"] > eN.bi.off
-) {                                      /+ heading object (current line empty) +/
-  obj_cite_digits = (an_object["lev_markup_number"].to!int == 0)
-  ? ocn_emit(eN.ocn.reset)
-  : ocn_emit(pith["ocn"]);
-  an_object["is"] = "heading";
-  an_object_key = "body_nugget";
-  TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_object_and_anchor_tags_tuple
-    = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, ((_new_doc) ? Yes._new_doc : No._new_doc));
-  an_object["substantive"] = substantive_object_and_anchor_tags_tuple[sObj.content];
-  anchor_tag = substantive_object_and_anchor_tags_tuple[sObj.anchor_tag];
-  if (_new_doc) {
-    cnt1 = 1;
-    cnt2 = 1;
-    cnt3 = 1;
-    _new_doc = false;
-  }
-  if (
-    an_object["lev_markup_number"].to!int == 4
-    && (!(anchor_tag.empty)
-    || (lv0to3_tags.length > 0))
-  ) {
-    tag_in_seg["seg_lv4"]    = anchor_tag;
-    tag_in_seg["seg_lv1to4"] = anchor_tag;
-    lev_anchor_tag = anchor_tag;
-    tag_assoc[anchor_tag]["seg_lv4"]    = tag_in_seg["seg_lv4"];
-    tag_assoc[anchor_tag]["seg_lv1to4"] = tag_in_seg["seg_lv1to4"];
-    if (lv0to3_tags.length > 0) { /+ names used for html markup segments 1 to 4 (rather than epub which has separate segments for A to D) +/
-      foreach (lv0_to_lv3_html_tag; lv0to3_tags) {
-        tag_assoc[lv0_to_lv3_html_tag]["seg_lv4"] = anchor_tag;
-      }
-    }
-    anchor_tag_ = anchor_tag;
-    lv0to3_tags = lv0to3_tags.init;
-  } else if (an_object["lev_markup_number"].to!int > 4) {
-    tag_in_seg["seg_lv4"]    = anchor_tag_;
-    tag_in_seg["seg_lv1to4"] = anchor_tag_;
-    lev_anchor_tag           = anchor_tag;
-    tag_assoc[anchor_tag]["seg_lv4"] = tag_in_seg["seg_lv4"];
-    tag_assoc[anchor_tag]["seg_lv1to4"] = tag_in_seg["seg_lv1to4"];
-  } else if (an_object["lev_markup_number"].to!int < 4) {
-    string segn;
-    switch (an_object["lev_markup_number"].to!int) {                           /+ names used for epub markup segments A to D +/
-    case 0:
-      segn = "_the_title";
-      goto default;
-    case 1:
-      segn = "_part_" ~ cnt1.to!string;
-      ++cnt1;
-      goto default;
-    case 2:
-      segn = "_part_" ~ cnt1.to!string ~ "_" ~ cnt2.to!string;
-      ++cnt2;
-      goto default;
-    case 3:
-      segn =  "_part_" ~ cnt1.to!string ~ "_" ~ cnt2.to!string ~ "_" ~ cnt3.to!string;
-      ++cnt3;
-      goto default;
-    default:
-      lv0to3_tags ~= obj_cite_digits.object_number.to!string;
-      lv0to3_tags ~= segn;
-      tag_in_seg["seg_lv4"]    = segn; // for html segname need following lv4 not yet known
-      tag_in_seg["seg_lv1to4"] = segn;
-      break;
-    }
-  }
-  an_object["bookindex_nugget"]
-    = ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-  bookindex_unordered_hashes
-    = bookindex_extract_hash.bookindex_nugget_hash(an_object["bookindex_nugget"], obj_cite_digits, tag_in_seg);
-  /+ (incrementally build toc) table of contents here! +/
-  _anchor_tag                   = obj_cite_digits.identifier;
-  the_document_toc_section      = obj_im.flow_table_of_contents_gather_headings(
-    an_object,
-    conf_make_meta,
-    tag_in_seg,
-    _anchor_tag,
-    lev4_subtoc,
-    the_document_toc_section,
-  );
-  if (an_object["lev_markup_number"] == "4") {
-    segnames["html"] ~= tag_in_seg["seg_lv4"];
-    html_segnames_ptr = html_segnames_ptr_cntr;
-    html_segnames_ptr_cntr++;
-  }
-  if (an_object["lev_markup_number"].to!int <= 4) {
-    segnames["epub"] ~= tag_in_seg["seg_lv1to4"];
-  }
-  auto comp_obj_heading
-    = node_construct.node_emitter_heading(
-      an_object["substantive"],
-      an_object["lev_markup_number"],
-      an_object["lev_collapsed_number"],
-      an_object["dummy_heading_status"],
-      tag_in_seg,
-      lev_anchor_tag,
-      tag_assoc,
-      obj_cite_digits,                              // OCNset
-      cntr,                                         // int
-      heading_ptr,                                  // int
-      lv_ancestors_txt,                             // string[]
-      an_object["is"],                              // string
-      html_segnames_ptr,                            // int
-      substantive_object_and_anchor_tags_tuple[sObj.notes_reg],
-      substantive_object_and_anchor_tags_tuple[sObj.notes_star],
-      substantive_object_and_anchor_tags_tuple[sObj.links],
-    );
-  ++heading_ptr;
-  debug(segments) {
-    writeln(an_object["lev_markup_number"]);
-    writeln(tag_in_seg["seg_lv4"]);
-    writeln(tag_in_seg["seg_lv1to4"]);
-  }
-  the_document_body_section ~= comp_obj_heading;
-  debug(objectrelated1) { // check
-    writeln(line);
-  }
-  flow_common_reset_(line_occur, an_object, pith);
-  an_object.remove("lev");
-  an_object.remove("lev_markup_number");
-  processing.remove("verse");
-  ++cntr;
-#+END_SRC
-
-******* paragraph object :paragraph:object:
-
-#+NAME: abs_in_loop_body_not_block_obj_line_empty_para_obj
-#+BEGIN_SRC d
-} else if (pith["txt_is"] == eN.txt_is.para
-  && line_occur["para"] > eN.bi.off
-) {
-  /+ paragraph object (current line empty) +/
-  /+ repeated character paragraph separator +/
-  if ((an_object[an_object_key].to!string).matchFirst(rgx.repeated_character_line_separator)) {
-    pith["ocn"] = eN.ocn.off;
-  }
-  obj_cite_digits = ocn_emit(pith["ocn"]);
-  an_object["bookindex_nugget"]
-    = ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-  bookindex_unordered_hashes
-    = bookindex_extract_hash.bookindex_nugget_hash(an_object["bookindex_nugget"], obj_cite_digits, tag_in_seg);
-  an_object["is"] = "para";
-  auto comp_obj_heading
-    = node_construct.node_location_emitter(
-      content_non_header,
-      tag_in_seg,
-      lev_anchor_tag,
-      tag_assoc,
-      obj_cite_digits,
-      cntr,
-      heading_ptr-1,
-      an_object["is"],
-    );
-  TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_obj_misc_tuple
-    = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, No._new_doc);
-  an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-  anchor_tag = substantive_obj_misc_tuple[sObj.anchor_tag];
-  comp_obj_para                                       = comp_obj_para.init;
-  comp_obj_para.metainfo.is_of_part                   = "body";
-  comp_obj_para.metainfo.is_of_section                = "body";
-  comp_obj_para.metainfo.is_of_type                   = "para";
-  comp_obj_para.metainfo.is_a                         = "para";
-  comp_obj_para.text                                  = an_object["substantive"].to!string.strip;
-  comp_obj_para.tags.html_segment_anchor_tag_is       = tag_in_seg["seg_lv4"];
-  comp_obj_para.tags.epub_segment_anchor_tag_is       = tag_in_seg["seg_lv1to4"];
-  comp_obj_para.metainfo.ocn                          = obj_cite_digits.object_number;
-  comp_obj_para.metainfo.identifier                   = obj_cite_digits.identifier;
-  comp_obj_para.metainfo.object_number_off            = (obj_cite_digits.off == 0)   ? true : false; // TODO
-  comp_obj_para.metainfo.o_n_book_index               = obj_cite_digits.bkidx;
-  comp_obj_para.metainfo.object_number_type           = obj_cite_digits.type;
-  comp_obj_para.attrib.indent_hang                    = indent["hang_position"];
-  comp_obj_para.attrib.indent_base                    = indent["base_position"];
-  comp_obj_para.attrib.bullet                         = bullet;
-  comp_obj_para.tags.anchor_tags                      = [anchor_tag]; anchor_tag="";
-  comp_obj_para.has.inline_notes_reg                  = substantive_obj_misc_tuple[sObj.notes_reg];
-  comp_obj_para.has.inline_notes_star                 = substantive_obj_misc_tuple[sObj.notes_star];
-  comp_obj_para.has.inline_links                      = substantive_obj_misc_tuple[sObj.links];
-  comp_obj_para.has.image_without_dimensions          = substantive_obj_misc_tuple[sObj.image_no_dimensions];
-  the_document_body_section                           ~= comp_obj_para;
-  tag_assoc                                           = an_object.inline_para_link_anchor(tag_in_seg, tag_assoc);
-  flow_common_reset_(line_occur, an_object, pith);
-  indent = [
-    "hang_position" : 0,
-    "base_position" : 0,
-  ];
-  bullet = false;
-  processing.remove("verse");
-  ++cntr;
-} else {
-  // could be useful to test line variable should be empty and never null
-}
-#+END_SRC
-
-*** regular _text objects_ identified :text:paragraph:
-
-#+NAME: abs_in_loop_body_reloop_get_prior_state
-#+BEGIN_SRC d
-/+ unless (the_document_body_section.length == 0) ? +/
-if (the_document_body_section.length > 0) {
-  if (((the_document_body_section[$-1].metainfo.is_a == "para")
-    || (the_document_body_section[$-1].metainfo.is_a == "heading")
-    || (the_document_body_section[$-1].metainfo.is_a == "quote")
-    || (the_document_body_section[$-1].metainfo.is_a == "group")
-    || (the_document_body_section[$-1].metainfo.is_a == "block")
-    || (the_document_body_section[$-1].metainfo.is_a == "verse"))
-  && (the_document_body_section.length > previous_length)) {
-    if ((the_document_body_section[$-1].metainfo.is_a == "heading")
-    && (the_document_body_section[$-1].metainfo.heading_lev_markup < 5)) {
-      pith["section"] = eN.sect.unset;
-    }
-    if (the_document_body_section[$-1].metainfo.is_a == "verse") {             /+ scan for endnotes for whole poem (each verse in poem) +/
-      foreach (i; previous_length .. the_document_body_section.length) {
-        if (the_document_body_section[i].metainfo.is_a == "verse") {
-          if ((the_document_body_section[i].text).match(
-            rgx.inline_notes_al_all_note
-          )) {
-            note_section.gather_notes_for_endnote_section(
-              the_document_body_section,
-              tag_in_seg,
-              (i).to!int,
-            );
-          }
-        }
-      }
-    } else {                                                                   /+ scan object for endnotes +/
-      previous_length = the_document_body_section.length.to!int;
-      if ((the_document_body_section[$-1].text).match(
-        rgx.inline_notes_al_all_note
-      )) {
-        previous_count = (the_document_body_section.length -1).to!int;
-        note_section.gather_notes_for_endnote_section(
-          the_document_body_section,
-          tag_in_seg,
-          (the_document_body_section.length-1).to!int,
-        );
-      }
-    }
-    previous_length = the_document_body_section.length.to!int;
-  }
-}
-#+END_SRC
-
-** 3. _post main-loop processing_ :post:
-*** misc
-
-/+
-  Backmatter:
-  - endnotes
-  - glossary
-  - bibliography / references
-  - book index
-  - blurb
-+/
-
-*** tie up preparation of document sections
-**** in section: xml_dom_tail_section
-
-eof xml_dom_tail_section
-
-#+NAME: abs_loop_body_exit_eof_xml_dom_tail
-#+BEGIN_SRC d
-{ // EOF
-  comp_obj_heading_                                              = comp_obj_heading_.init;
-  comp_obj_heading_.metainfo.is_of_part                          = "backmatter";
-  comp_obj_heading_.metainfo.is_of_section                       = "tail";
-  comp_obj_heading_.metainfo.is_of_type                          = "para";
-  comp_obj_heading_.metainfo.is_a                                = "heading";
-  comp_obj_heading_.text                                         = "";
-  comp_obj_heading_.metainfo.ocn                                 = 0;
-  comp_obj_heading_.metainfo.identifier                          = "";
-  comp_obj_heading_.metainfo.dummy_heading                       = false;
-  comp_obj_heading_.metainfo.object_number_off                   = false;
-  comp_obj_heading_.metainfo.object_number_type                  = 0;
-  comp_obj_heading_.tags.segment_anchor_tag_epub                 = "_part_eof";
-  comp_obj_heading_.tags.anchor_tag_html                         = comp_obj_heading_.tags.segment_anchor_tag_epub;
-  comp_obj_heading_.tags.in_segment_html                         = "tail";
-  comp_obj_heading_.tags.anchor_tags                             = ["section_eof"];
-  comp_obj_heading_.metainfo.heading_lev_markup                  = 1;
-  comp_obj_heading_.metainfo.heading_lev_collapsed               = 1;
-  comp_obj_heading_.metainfo.parent_ocn                          = 1;
-  comp_obj_heading_.metainfo.parent_lev_markup                   = 0;
-  comp_obj_heading_.metainfo.dom_structure_markedup_tags_status  = [ 0, 0, 0, 0, 0, 0, 0, 0];
-  comp_obj_heading_.metainfo.dom_structure_collapsed_tags_status = [ 0, 0, 0, 0, 0, 0, 0, 0];
-  the_document_xml_dom_tail_section                              ~= comp_obj_heading_;
-  tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-  tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-}
-#+END_SRC
-
-**** endnotes section (scroll & seg) :endnotes:
-
-#+NAME: abs_post_endnote_tuple
-#+BEGIN_SRC d
-auto en_tuple = note_section.endnote_objects(obj_cite_digits, opt_action);
-auto the_document_endnotes_section = en_tuple[0];
-obj_cite_digits = en_tuple[1];
-debug(endnotes) {
-  writefln("%s %s",
-    __LINE__,
-    the_document_endnotes_section.length
-  );
-  foreach (o; the_document_endnotes_section) {
-    writeln(o);
-  }
-}
-#+END_SRC
-
-**** no glossary section? :glossary:
-
-#+NAME: abs_post_glossary_nugget
-#+BEGIN_SRC d
-if (an_object["glossary_nugget"].length == 0) {
-  comp_obj_heading_                                   = comp_obj_heading_.init;
-  comp_obj_heading_.metainfo.is_of_part               = "empty";
-  comp_obj_heading_.metainfo.is_of_section            = "empty";
-  comp_obj_heading_.metainfo.is_of_type               = "para";
-  comp_obj_heading_.metainfo.is_a                     = "heading";
-  comp_obj_heading_.text                              = "(skip) there is no Glossary section";
-  comp_obj_heading_.metainfo.ocn                      = 0;
-  comp_obj_heading_.metainfo.identifier               = "";
-  comp_obj_heading_.metainfo.dummy_heading            = true;
-  comp_obj_heading_.metainfo.object_number_off        = true;
-  comp_obj_heading_.metainfo.object_number_type       = 0;
-  comp_obj_heading_.metainfo.heading_lev_markup       = 1;
-  comp_obj_heading_.metainfo.heading_lev_collapsed    = 1;
-  comp_obj_heading_.metainfo.parent_ocn               = 1;
-  comp_obj_heading_.metainfo.parent_lev_markup        = 0;
-  the_document_glossary_section                       ~= comp_obj_heading_;
-}
-debug(glossary) {
-  foreach (gloss; the_document_glossary_section) {
-    writeln(gloss.text);
-  }
-}
-#+END_SRC
-
-**** bibliography section (objects) :bibliography:
-
-#+NAME: abs_post_biblio_init
-#+BEGIN_SRC d
-auto biblio_unsorted_incomplete = biblio_arr_json.dup;
-auto biblio = Bibliography();
-auto biblio_ordered
-  = biblio.flow_bibliography_(biblio_unsorted_incomplete, bib_arr_json);
-#+END_SRC
-
-#+NAME: abs_post_biblio
-#+BEGIN_SRC d
-if (biblio_ordered.length > 0) {
-  {
-    comp_obj_heading_                                 = comp_obj_heading_.init;
-    comp_obj_heading_.metainfo.is_of_part             = "backmatter";
-    comp_obj_heading_.metainfo.is_of_section          = "bibliography";
-    comp_obj_heading_.metainfo.is_of_type             = "para";
-    comp_obj_heading_.metainfo.is_a                   = "heading";
-    comp_obj_heading_.text                            = "Bibliography";
-    comp_obj_heading_.metainfo.ocn                    = 0;
-    comp_obj_heading_.metainfo.identifier             = "";
-    comp_obj_heading_.metainfo.dummy_heading          = false;
-    comp_obj_heading_.metainfo.object_number_off      = false;
-    comp_obj_heading_.metainfo.object_number_type     = 0;
-    comp_obj_heading_.tags.segment_anchor_tag_epub    = "_part_bibliography";
-    comp_obj_heading_.tags.anchor_tag_html            = comp_obj_heading_.tags.segment_anchor_tag_epub;
-    comp_obj_heading_.tags.in_segment_html            = "bibliography";
-    comp_obj_heading_.tags.anchor_tags                = ["section_bibliography"];
-    comp_obj_heading_.metainfo.heading_lev_markup     = 1;
-    comp_obj_heading_.metainfo.heading_lev_collapsed  = 1;
-    comp_obj_heading_.metainfo.parent_ocn             = 1;
-    comp_obj_heading_.metainfo.parent_lev_markup      = 0;
-    comp_obj_heading_.metainfo.dom_structure_markedup_tags_status  = [ 1, 1, 0, 0, 0, 0, 0, 0];
-    comp_obj_heading_.metainfo.dom_structure_collapsed_tags_status = [ 1, 1, 0, 0, 0, 0, 0, 0];
-    the_document_bibliography_section                 ~= comp_obj_heading_;
-    tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-    tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-  }
-  {
-    comp_obj_heading_                                 = comp_obj_heading_.init;
-    comp_obj_heading_.metainfo.is_of_part             = "backmatter";
-    comp_obj_heading_.metainfo.is_of_section          = "bibliography";
-    comp_obj_heading_.metainfo.is_of_type             = "para";
-    comp_obj_heading_.metainfo.is_a                   = "heading";
-    comp_obj_heading_.text                            = "Bibliography";
-    comp_obj_heading_.metainfo.ocn                    = 0;
-    comp_obj_heading_.metainfo.identifier             = "";
-    comp_obj_heading_.metainfo.dummy_heading          = true;
-    comp_obj_heading_.metainfo.object_number_off      = true;
-    comp_obj_heading_.metainfo.object_number_type     = 0;
-    comp_obj_heading_.tags.segment_anchor_tag_epub    = "bibliography";
-    comp_obj_heading_.tags.anchor_tag_html            = comp_obj_heading_.tags.segment_anchor_tag_epub;
-    comp_obj_heading_.tags.in_segment_html            = comp_obj_heading_.tags.anchor_tag_html;
-    comp_obj_heading_.metainfo.heading_lev_markup     = 4;
-    comp_obj_heading_.metainfo.heading_lev_collapsed  = 2;
-    comp_obj_heading_.metainfo.parent_ocn             = 1;
-    comp_obj_heading_.metainfo.parent_lev_markup      = 0;
-    comp_obj_heading_.metainfo.dom_structure_markedup_tags_status  = [ 1, 1, 0, 0, 1, 0, 0, 0];
-    comp_obj_heading_.metainfo.dom_structure_collapsed_tags_status = [ 1, 1, 1, 0, 0, 0, 0, 0];
-    comp_obj_heading_.tags.anchor_tags                = ["bibliography"];
-    the_document_bibliography_section                 ~= comp_obj_heading_;
-    tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-    tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-  }
-  {
-    string out_;
-    foreach (entry; biblio_ordered) {
-      out_ = format("%s \"%s\"%s%s%s%s%s%s%s%s%s.",
-        ((entry["author"].str.empty) ? entry["editor"].str : entry["author"].str),
-        entry["fulltitle"].str,
-        ((entry["journal"].str.empty) ? "" : ", " ~ mkup.italic ~ mkup.ff_o ~ entry["journal"].str ~ mkup.ff_c ~ mkup.italic),
-        ((entry["volume"].str.empty) ? "" : ", " ~ entry["volume"].str),
-        ((entry["in"].str.empty) ? "" : ", " ~ entry["in"].str),
-        ((!(entry["author"].str.empty) && (!(entry["editor"].str.empty))) ? entry["editor"].str : ""),
-        ", " ~ entry["year"].str,
-        ((entry["pages"].str.empty) ? "" : ", " ~ entry["pages"].str),
-        ((entry["publisher"].str.empty) ? "" : ", " ~ entry["publisher"].str),
-        ((entry["place"].str.empty) ? "" : ", " ~ entry["place"].str),
-        ((entry["url"].str.empty) ? "" : ", [" ~ entry["url"].str ~ "]"),
-      );
-      comp_obj_para                                   = comp_obj_para.init;
-      comp_obj_para.metainfo.is_of_part               = "backmatter";
-      comp_obj_para.metainfo.is_of_section            = "bibliography";
-      comp_obj_para.metainfo.is_of_type               = "para";
-      comp_obj_para.metainfo.is_a                     = "bibliography";
-      comp_obj_para.text                              = out_.to!string.strip;
-      comp_obj_para.metainfo.ocn                      = 0;
-      comp_obj_para.metainfo.identifier               = "";
-      comp_obj_para.metainfo.object_number_off        = true;
-      comp_obj_para.metainfo.object_number_type       = 0;
-      comp_obj_para.attrib.indent_hang                = 0;
-      comp_obj_para.attrib.indent_base                = 1;
-      comp_obj_para.attrib.bullet                     = bullet;
-      comp_obj_para.tags.anchor_tags                  = [anchor_tag];
-      the_document_bibliography_section               ~= comp_obj_para;
-    }
-  }
-} else {
-  comp_obj_heading_                                   = comp_obj_heading_.init;
-  comp_obj_heading_.metainfo.is_of_part               = "empty";
-  comp_obj_heading_.metainfo.is_of_section            = "empty";
-  comp_obj_heading_.metainfo.is_of_type               = "para";
-  comp_obj_heading_.metainfo.is_a                     = "heading";
-  comp_obj_heading_.text                              = "(skip) there is no Bibliography";
-  comp_obj_heading_.metainfo.ocn                      = 0;
-  comp_obj_heading_.metainfo.identifier               = "";
-  comp_obj_heading_.metainfo.dummy_heading            = true;
-  comp_obj_heading_.metainfo.object_number_off        = true;
-  comp_obj_heading_.metainfo.object_number_type       = 0;
-  comp_obj_heading_.metainfo.heading_lev_markup       = 1;
-  comp_obj_heading_.metainfo.heading_lev_collapsed    = 1;
-  comp_obj_heading_.metainfo.parent_ocn               = 1;
-  comp_obj_heading_.metainfo.parent_lev_markup        = 0;
-  the_document_bibliography_section                   ~= comp_obj_heading_;
-}
-#+END_SRC
-
-#+NAME: abs_post_biblio_debug_write
-#+BEGIN_SRC d
-debug(bibliosection) {
-  foreach (o; the_document_bibliography_section) {
-    writeln(o.text);
-  }
-}
-#+END_SRC
-
-***** bibliography components
-
-#+BEGIN_SRC d
-JSONValue biblio_entry_tags_jsonstr =  `{
-  "is"                               : "",
-  "sortby_deemed_author_year_title"  : "",
-  "deemed_author"                    : "",
-  "author_raw"                       : "",
-  "author"                           : "",
-  "author_arr"                       : [ "" ],
-  "editor_raw"                       : "",
-  "editor"                           : "",
-  "editor_arr"                       : [ "" ],
-  "title"                            : "",
-  "subtitle"                         : "",
-  "fulltitle"                        : "",
-  "language"                         : "",
-  "trans"                            : "",
-  "src"                              : "",
-  "journal"                          : "",
-  "in"                               : "",
-  "volume"                           : "",
-  "edition"                          : "",
-  "year"                             : "",
-  "place"                            : "",
-  "publisher"                        : "",
-  "url"                              : "",
-  "pages"                            : "",
-  "note"                             : "",
-  "short_name"                       : "",
-  "id"                               : ""
-}`; // is: book, article, magazine, newspaper, blog, other
-#+END_SRC
-
-**** bookindex section (scroll & seg) :book:index:
-
-#+NAME: abs_post_bookindex
-#+BEGIN_SRC d
-auto bi = BookIndexReportSection();
-auto bi_tuple
-  = bi.bookindex_build_abstraction_section(
-    bookindex_unordered_hashes,
-    obj_cite_digits,
-    opt_action,
-  );
-destroy(bookindex_unordered_hashes);
-auto the_document_bookindex_section = bi_tuple[0];
-obj_cite_digits = bi_tuple[1];
-debug(bookindex) {
-  foreach (bi_entry; the_document_bookindex_section) {
-    writeln(bi_entry);
-  }
-}
-#+END_SRC
-
-**** no blurb section? :blurb:
-
-#+NAME: abs_post_no_blurb
-#+BEGIN_SRC d
-if (an_object["blurb_nugget"].length == 0) {
-  comp_obj_heading_                                   = comp_obj_heading_.init;
-  comp_obj_heading_.metainfo.is_of_part               = "empty";
-  comp_obj_heading_.metainfo.is_of_section            = "empty";
-  comp_obj_heading_.metainfo.is_of_type               = "para";
-  comp_obj_heading_.metainfo.is_a                     = "heading";
-  comp_obj_heading_.text                              = "(skip) there is no Blurb section";
-  comp_obj_heading_.metainfo.ocn                      = 0;
-  comp_obj_heading_.metainfo.identifier               = "";
-  comp_obj_para.metainfo.object_number_off            = true;
-  comp_obj_para.metainfo.object_number_type           = 0;
-  comp_obj_heading_.tags.segment_anchor_tag_epub      = "";
-  comp_obj_heading_.tags.anchor_tag_html              = "";
-  comp_obj_heading_.tags.in_segment_html              = "";
-  comp_obj_heading_.metainfo.heading_lev_markup       = 1;
-  comp_obj_heading_.metainfo.heading_lev_collapsed    = 1;
-  comp_obj_heading_.metainfo.parent_ocn               = 1;
-  comp_obj_heading_.metainfo.parent_lev_markup        = 0;
-  the_document_blurb_section                          ~= comp_obj_heading_;
-}
-debug(blurb) {
-  foreach (blurb; the_document_blurb_section) {
-    writeln(blurb.text);
-  }
-}
-#+END_SRC
-
-**** toc backmatter, table of contents backmatter (scroll & seg) :contents:
-
-#+NAME: abs_post_contents
-#+BEGIN_SRC d
-indent = [
-  "hang_position" : 1,
-  "base_position" : 1,
-];
-comp_obj_toc                                          = comp_obj_toc.init;
-comp_obj_toc.metainfo.is_of_part                      = "frontmatter";
-comp_obj_toc.metainfo.is_of_section                   = "toc";
-comp_obj_toc.metainfo.is_of_type                      = "para";
-comp_obj_toc.metainfo.is_a                            = "toc";
-comp_obj_toc.metainfo.ocn                             = 0;
-comp_obj_toc.metainfo.identifier                      = "";
-comp_obj_toc.metainfo.object_number_off               = true;
-comp_obj_toc.metainfo.object_number_type              = 0;
-comp_obj_toc.attrib.indent_hang                       = indent["hang_position"];
-comp_obj_toc.attrib.indent_base                       = indent["base_position"];
-comp_obj_toc.attrib.bullet                            = false;
-if (the_document_endnotes_section.length > 1) {
-  toc_txt_ = format("%s%s%s%s#%s%s",
-    mkup.lnk_o,
-    "Endnotes",
-    mkup.lnk_c,
-    mkup.url_o,
-    "endnotes",
-    mkup.url_c,
-  );
-  toc_txt_= toc_txt_.links_and_images;
-  comp_obj_toc.text                                   = toc_txt_.to!string.strip;
-  comp_obj_toc.has.inline_links                       = true;
-  the_document_toc_section                            ~= comp_obj_toc;
-}
-if (the_document_glossary_section.length > 1) {
-  toc_txt_ = format("%s%s%s%s#%s%s",
-    mkup.lnk_o,
-    "Glossary",
-    mkup.lnk_c,
-    mkup.url_o,
-    "glossary",
-    mkup.url_c,
-  );
-  toc_txt_= toc_txt_.links_and_images;
-  comp_obj_toc.text                                   = toc_txt_.to!string.strip;
-  comp_obj_toc.has.inline_links                       = true;
-  the_document_toc_section                            ~= comp_obj_toc;
-}
-if (the_document_bibliography_section.length > 1){
-  toc_txt_ = format("%s%s%s%s#%s%s",
-    mkup.lnk_o,
-    "Bibliography",
-    mkup.lnk_c,
-    mkup.url_o,
-    "bibliography",
-    mkup.url_c,
-  );
-  toc_txt_= toc_txt_.links_and_images;
-  comp_obj_toc.text                                   = toc_txt_.to!string.strip;
-  comp_obj_toc.has.inline_links                       = true;
-  the_document_toc_section                            ~= comp_obj_toc;
-}
-if (the_document_bookindex_section.length > 1) {
-  toc_txt_ = format("%s%s%s%s#%s%s",
-    mkup.lnk_o,
-    "Book Index",
-    mkup.lnk_c,
-    mkup.url_o,
-    "bookindex",
-    mkup.url_c,
-  );
-  toc_txt_= toc_txt_.links_and_images;
-  comp_obj_toc.text                                   = toc_txt_.to!string.strip;
-  comp_obj_toc.has.inline_links                       = true;
-  the_document_toc_section                            ~= comp_obj_toc;
-}
-if (the_document_blurb_section.length > 1) {
-  toc_txt_ = format("%s%s%s%s#%s%s",
-    mkup.lnk_o,
-    "Blurb",
-    mkup.lnk_c,
-    mkup.url_o,
-    "blurb",
-    mkup.url_c,
-  );
-  toc_txt_= toc_txt_.links_and_images;
-  comp_obj_toc.has.inline_links                       = true;
-  comp_obj_toc.text                                   = toc_txt_.to!string.strip;
-  the_document_toc_section                            ~= comp_obj_toc;
-}
-debug(toc) {
-  writefln(
-    "%s %s",
-    __LINE__,
-  );
-  foreach (toc_linked_heading; the_document_toc_section) {
-    writeln(mkup.indent_by_spaces_provided(toc_linked_heading.attrib.indent_hang), toc_linked_heading.text);
-  }
-}
-#+END_SRC
-
-**** doc head (separate document head from body, make space for toc)
-
-#+NAME: abs_post_separate_doc_head_and_doc_body
-#+BEGIN_SRC d
-the_document_head_section ~= the_document_body_section[0];
-the_document_body_section = the_document_body_section[1..$];
-#+END_SRC
-
-*** ↻ *LOOPs* _post main-loop loops_ :loop:post: WORKON
-**** 1. ↻ _Loop as required_ (e.g. backmatter): loop up to lev4, extract html segnames, set pointers
-
-this extra loop is used/needed to determine pre and (in particular) next segment
-for html, that is then used in a subsequent loop
-
-NOTE there are issues attempting to do this on first pass as:
-  - backmatter is created out of sequence and
-  - it is not certain which are present
-
-  - it is quite neat to have all in one place as we have here
-
-  - could optimise a bit by
-    - skipping this loop unless the html seg or epub output is selected
-
-***** Methods
-****** get ancestors markup
-
-#+NAME: abs_post_heading_ancestors_markup
-#+BEGIN_SRC d
-@safe int[] _get_ancestors_markup(O)(O obj, ref int[] _ancestors_markup) {
-  if (obj.metainfo.is_a == "heading") {
-    debug(dom) {
-      writeln(obj.text);
-    }
-    if (obj.metainfo.heading_lev_markup == 1) {
-      _ancestors_markup = [
-        _ancestors_markup[0],
-        0,0,0,0,0,0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_markup == 2) {
-      _ancestors_markup = [
-        _ancestors_markup[0],
-        _ancestors_markup[1],
-        0,0,0,0,0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_markup == 3) {
-      _ancestors_markup = [
-        _ancestors_markup[0],
-        _ancestors_markup[1],
-        _ancestors_markup[2],
-        0,0,0,0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_markup == 4) {
-      _ancestors_markup = [
-        _ancestors_markup[0],
-        _ancestors_markup[1],
-        _ancestors_markup[2],
-        _ancestors_markup[3],
-        0,0,0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_markup == 5) {
-      _ancestors_markup = [
-        _ancestors_markup[0],
-        _ancestors_markup[1],
-        _ancestors_markup[2],
-        _ancestors_markup[3],
-        _ancestors_markup[4],
-        0,0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_markup == 6) {
-      _ancestors_markup = [
-        _ancestors_markup[0],
-        _ancestors_markup[1],
-        _ancestors_markup[2],
-        _ancestors_markup[3],
-        _ancestors_markup[4],
-        _ancestors_markup[5],
-        0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_markup == 7) {
-      _ancestors_markup = [
-        _ancestors_markup[0],
-        _ancestors_markup[1],
-        _ancestors_markup[2],
-        _ancestors_markup[3],
-        _ancestors_markup[4],
-        _ancestors_markup[5],
-        _ancestors_markup[6],
-        0
-      ];
-    }
-    if (obj.metainfo.heading_lev_markup == 8) {
-      _ancestors_markup = [
-        _ancestors_markup[0],
-        _ancestors_markup[1],
-        _ancestors_markup[2],
-        _ancestors_markup[3],
-        _ancestors_markup[4],
-        _ancestors_markup[5],
-        _ancestors_markup[6],
-        _ancestors_markup[7]
-      ];
-    }
-    _ancestors_markup[obj.metainfo.heading_lev_markup] = obj.metainfo.ocn;
-  }
-  debug(ancestor_markup) {
-    writeln("marked up: ", _ancestors_markup);
-  }
-  return _ancestors_markup;
-}
-#+END_SRC
-
-****** get ancestors collapsed
-
-#+NAME: abs_post_heading_ancestors_collapsed
-#+BEGIN_SRC d
-@safe int[] _get_ancestors_collapsed(O)(O obj, ref int[] _ancestors_collapsed) {
-  if (obj.metainfo.is_a == "heading") {
-    if (obj.metainfo.heading_lev_collapsed == 1) {
-      _ancestors_collapsed = [
-        _ancestors_collapsed[0],
-        0,0,0,0,0,0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_collapsed == 2) {
-      _ancestors_collapsed = [
-        _ancestors_collapsed[0],
-        _ancestors_collapsed[1],
-        0,0,0,0,0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_collapsed == 3) {
-      _ancestors_collapsed = [
-        _ancestors_collapsed[0],
-        _ancestors_collapsed[1],
-        _ancestors_collapsed[2],
-        0,0,0,0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_collapsed == 4) {
-      _ancestors_collapsed = [
-        _ancestors_collapsed[0],
-        _ancestors_collapsed[1],
-        _ancestors_collapsed[2],
-        _ancestors_collapsed[3],
-        0,0,0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_collapsed == 5) {
-      _ancestors_collapsed = [
-        _ancestors_collapsed[0],
-        _ancestors_collapsed[1],
-        _ancestors_collapsed[2],
-        _ancestors_collapsed[3],
-        _ancestors_collapsed[4],
-        0,0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_collapsed == 6) {
-      _ancestors_collapsed = [
-        _ancestors_collapsed[0],
-        _ancestors_collapsed[1],
-        _ancestors_collapsed[2],
-        _ancestors_collapsed[3],
-        _ancestors_collapsed[4],
-        _ancestors_collapsed[5],
-        0,0
-      ];
-    }
-    if (obj.metainfo.heading_lev_collapsed == 7) {
-      _ancestors_collapsed = [
-        _ancestors_collapsed[0],
-        _ancestors_collapsed[1],
-        _ancestors_collapsed[2],
-        _ancestors_collapsed[3],
-        _ancestors_collapsed[4],
-        _ancestors_collapsed[5],
-        _ancestors_collapsed[6],
-        0
-      ];
-    }
-    if (obj.metainfo.heading_lev_collapsed == 8) {
-      _ancestors_collapsed = [
-        _ancestors_collapsed[0],
-        _ancestors_collapsed[1],
-        _ancestors_collapsed[2],
-        _ancestors_collapsed[3],
-        _ancestors_collapsed[4],
-        _ancestors_collapsed[5],
-        _ancestors_collapsed[6],
-        _ancestors_collapsed[7]
-      ];
-    }
-    _ancestors_collapsed[obj.metainfo.heading_lev_collapsed] = obj.metainfo.ocn;
-  }
-  debug(ancestor_collapsed) {
-    writeln("collapsed: ", _ancestors_collapsed);
-  }
-  return _ancestors_collapsed;
-}
-#+END_SRC
-
-***** ↻ Loop section: document body [bd] :loop:body:
-
-- substantive object numbers already exist
-- number un-numbered non-substantive text
-
-#+NAME: abs_post_loop_section_body_get_ancestors
-#+BEGIN_SRC d
-/+ multiple 1~ levels, loop through document body +/
-if (the_document_body_section.length > 1) {
-  int[] _ancestors_markup = [0,0,0,0,0,0,0,0];
-  int[][] _ancestors_markup_;
-  _ancestors_markup = [1,0,0,0,0,0,0,0];
-  _ancestors_markup_ ~= _ancestors_markup;
-  int[] _ancestors_collapsed = [0,0,0,0,0,0,0,0];
-  int[][] _ancestors_collapsed_;
-  _ancestors_collapsed = [1,0,0,0,0,0,0,0];
-  _ancestors_collapsed_ ~= _ancestors_collapsed;
-  foreach (ref obj; the_document_body_section) {
-    if (obj.metainfo.is_a == "heading") {
-      obj.metainfo.markedup_ancestors = _get_ancestors_markup(obj, _ancestors_markup);
-      obj.metainfo.collapsed_ancestors = _get_ancestors_collapsed(obj, _ancestors_collapsed);
-      obj.metainfo.parent_ocn = obj.metainfo.markedup_ancestors[obj.metainfo.parent_lev_markup];
-    }
-  }
-  debug(ancestors) {
-    writeln("ancestors markup o_n:    ", obj.metainfo.markedup_ancestors);
-    writeln("ancestors collapsed o_n: ", obj.metainfo.markedup_ancestors);
-  }
-}
-#+END_SRC
-
-***** ↻ Loop section: endnotes [en] :loop:endnotes:
-
-#+NAME: abs_post_loop_section_endnotes
-#+BEGIN_SRC d
-if (the_document_endnotes_section.length > 1) {
-  segnames["html"] ~= "endnotes";
-  segnames["epub"] ~= "endnotes";
-  html_segnames_ptr = html_segnames_ptr_cntr;
-  foreach (ref obj; the_document_endnotes_section) {
-    if (obj.metainfo.is_a == "heading") {
-      obj.metainfo.parent_ocn = obj.metainfo.markedup_ancestors[obj.metainfo.parent_lev_markup];
-    }
-    if (obj.metainfo.heading_lev_markup == 4) {
-      obj.ptr.html_segnames = html_segnames_ptr;
-      break;
-    }
-  }
-  html_segnames_ptr_cntr++;
-}
-#+END_SRC
-
-***** ↻ Loop section: glossary [gl] :loop:glossary:
-
-#+NAME: abs_post_loop_section_glossary
-#+BEGIN_SRC d
-if (the_document_glossary_section.length > 1) {
-  segnames["html"] ~= "glossary";
-  segnames["epub"] ~= "glossary";
-  html_segnames_ptr = html_segnames_ptr_cntr;
-  foreach (ref obj; the_document_glossary_section) {
-    if (obj.metainfo.is_a == "heading") {
-      obj.metainfo.parent_ocn = obj.metainfo.markedup_ancestors[obj.metainfo.parent_lev_markup];
-    }
-    if (obj.metainfo.heading_lev_markup == 4) {
-      obj.ptr.html_segnames = html_segnames_ptr;
-      break;
-    }
-  }
-  html_segnames_ptr_cntr++;
-}
-#+END_SRC
-
-***** ↻ Loop section: bibliography [bb] :loop:bibliography:
-
-#+NAME: abs_post_loop_section_biblio
-#+BEGIN_SRC d
-if (the_document_bibliography_section.length > 1) {
-  segnames["html"] ~= "bibliography";
-  segnames["epub"] ~= "bibliography";
-  html_segnames_ptr = html_segnames_ptr_cntr;
-  foreach (ref obj; the_document_bibliography_section) {
-    if (obj.metainfo.is_a == "heading") {
-      obj.metainfo.parent_ocn = obj.metainfo.markedup_ancestors[obj.metainfo.parent_lev_markup];
-    }
-    if (obj.metainfo.heading_lev_markup == 4) {
-      obj.ptr.html_segnames = html_segnames_ptr;
-      break;
-    }
-  }
-  html_segnames_ptr_cntr++;
-}
-#+END_SRC
-
-***** ↻ Loop section: book index [bi] :loop:bookindex:
-
-#+NAME: abs_post_loop_section_bookindex
-#+BEGIN_SRC d
-if (the_document_bookindex_section.length > 1) {
-  segnames["html"] ~= "bookindex";
-  segnames["epub"] ~= "bookindex";
-  html_segnames_ptr = html_segnames_ptr_cntr;
-  foreach (ref obj; the_document_bookindex_section) {
-    if (obj.metainfo.is_a == "heading") {
-      obj.metainfo.parent_ocn = obj.metainfo.markedup_ancestors[obj.metainfo.parent_lev_markup];
-    }
-    if (obj.metainfo.heading_lev_markup == 4) {
-      obj.ptr.html_segnames = html_segnames_ptr;
-      break;
-    }
-  }
-  html_segnames_ptr_cntr++;
-}
-#+END_SRC
-
-***** ↻ Loop section: blurb [bl] :loop:blurb:
-
-#+NAME: abs_post_loop_section_blurb
-#+BEGIN_SRC d
-if (the_document_blurb_section.length > 1) {
-  segnames["html"] ~= "blurb";
-  segnames["epub"] ~= "blurb";
-  html_segnames_ptr = html_segnames_ptr_cntr;
-  foreach (ref obj; the_document_blurb_section) {
-    if (obj.metainfo.is_a == "heading") {
-      obj.metainfo.parent_ocn = obj.metainfo.markedup_ancestors[obj.metainfo.parent_lev_markup];
-    }
-    if (obj.metainfo.heading_lev_markup == 4) {
-      obj.ptr.html_segnames = html_segnames_ptr;
-      break;
-    }
-  }
-  html_segnames_ptr_cntr++;
-}
-#+END_SRC
-
-**** 2. ↻ _Loop all objects:_ encode _structural relationships_ (sections, segments, objects)
-
-needed for DOM structure, segnames & subtoc, backmatter pointers & unique image
-list
-
-if used minimally only for DOM structure, segnames, subtoc, could optimise by
-- skipping second and third pass unless the output html seg or epub is being
-  made!
-
-- this loop could conveniently be used more extensively for ancestors as well
-  (though this information can be extracted earlier)
-
-Build here:
-- DOM structure
-  - ancestors & decendants
-    - ancestors could be determined earlier, but convenient to have here
-    - descendants could be in the form of:
-      - headings contained under current heading, and/or;
-      - the range of objects under the current heading
-- numbering
-  - already given
-    - substantive object numbers
-    - endnote
-  - provide
-    - glossary
-    - bibliography
-    - book index
-    - blurb
-    - other non-substantive objects (prefix & other stuff)
-  - you could also decide on a sequential object list, containing all objects
-    (both substantive and non-substantive objects), in addition to ocn, which
-    are for substantive/ citable objects within the document
-
-(as needed) up to document heading 1~, lev4 html:
-
-- during this (the third) pass all previous and next segment names are known
-- next are not yet known for backmatter during the second pas
-
-***** Methods
-****** decendants
-
-#+NAME: abs_post_loop_all_obj_get_heading_decendants
-#+BEGIN_SRC d
-@safe auto get_decendants()(ObjGenericComposite[] document_sections) {
-  int[string] _heading_ocn_decendants;
-  string[] _ocn_open_key = ["","","","","","","",""];
-  auto _doc_sect_length = document_sections.length - 1;
-  int _last_ocn;
-  foreach (_lg, ref obj; document_sections) {
-    if (obj.metainfo.is_a == "heading") {
-      foreach (_dts_lv, dom_tag_status; obj.metainfo.dom_structure_markedup_tags_status) {
-        switch (dom_tag_status) with (DomTags) {
-        case none: break;
-        case open:
-            _ocn_open_key[_dts_lv] = (obj.metainfo.ocn).to!string;
-            _heading_ocn_decendants[_ocn_open_key[_dts_lv]] = obj.metainfo.ocn;
-          break;
-        case close:
-          if (_ocn_open_key[_dts_lv].empty) {
-            _ocn_open_key[_dts_lv] = "0";
-          }
-          _heading_ocn_decendants[_ocn_open_key[_dts_lv]] = obj.metainfo.ocn - 1;
-          _ocn_open_key[_dts_lv] = (0).to!string;
-          break;
-        case close_and_open:
-          if (_ocn_open_key[_dts_lv].empty) {
-            _ocn_open_key[_dts_lv] = "0";
-          }
-          _heading_ocn_decendants[_ocn_open_key[_dts_lv]] = obj.metainfo.ocn - 1;
-          _ocn_open_key[_dts_lv] = (obj.metainfo.ocn).to!string;
-          _heading_ocn_decendants[_ocn_open_key[_dts_lv]] = obj.metainfo.ocn;
-          break;
-        case open_still: break;
-        default: break;
-        }
-      }
-    }
-    if (obj.metainfo.ocn > 0) {
-      _last_ocn = obj.metainfo.ocn;
-    }
-    if (_lg == _doc_sect_length) {
-      _heading_ocn_decendants["1"] = _last_ocn; // close existing o_n key
-    }
-  }
-  Tuple!(int, int)[] pairs;
-  foreach (pair; _heading_ocn_decendants.byPair) {
-    pairs ~= tuple(pair[0].to!int, pair[1]);
-  }
-  return pairs.sort;
-}
-#+END_SRC
-
-****** images: extract
-
-#+NAME: abs_post_loop_all_obj_get_image_names
-#+BEGIN_SRC d
-string[] _images;
-@safe string[] extract_images()(string content_block) {
-  string[] images_;
-  if (auto m = content_block.matchAll(rgx.image)) {
-    images_ ~= m.captures[1];
-  }
-  return images_;
-}
-string[] segnames_0_to_4;
-#+END_SRC
-
-****** images: dimensions
-
-#+NAME: abs_post_loop_all_obj_get_image_dimensions
-#+BEGIN_SRC d
-@system auto _image_dimensions(O,M)(O obj, M manifested) {
-  if (obj.has.image_without_dimensions) {
-    import std.math;
-    import imageformats;
-    int w, h, chans;
-    real _w, _h;
-    int max_width = 640;
-    foreach (img; obj.text.matchAll(rgx.inline_image_without_dimensions)) {
-      try {
-        read_image_info(manifested.src.image_dir_path ~ "/" ~ img["img"], w, h, chans); //
-      } catch (Exception ex) {
-        writeln("WARNING, image not found: ", img["img"], "\n  ", manifested.src.image_dir_path ~ "/" ~ img["img"]);
-      }
-      // calculate, decide max width and proportionally reduce to keep w & h within it
-      debug(images) {
-        writeln("width: ", w, ", height: ", h);
-      }
-      if (w > max_width) {
-        _w = max_width;
-        _h = round((max_width / w.to!real) * h.to!real);
-      } else {
-        _w = w;
-        _h = h;
-      }
-      obj.text = obj.text.replaceFirst(
-        rgx.inline_image_without_dimensions,
-        format(q"┃%s☼%s,w%sh%s %s┃",
-          "$1",
-          "$3",
-          _w.to!string,
-          _h.to!string,
-          "$6",
-        )
-      );
-    }
-    debug(images) {
-      writeln("image without dimensions: ", obj.text);
-    }
-  }
-  return obj;
-}
-#+END_SRC
-
-***** links: think about!!!
-- move actual links to an array in object struct so they cannot be regex munged within text block
-  - you may wish to exclude certain types of internal document link
-    - object number links
-      - toc
-      - book index
-    - footnotes and footnote numbers
-
-#+NAME: abs_post_loop_all_obj_get_links
-#+BEGIN_SRC d
-@safe auto _links(O)(O obj) {
-  if (auto m = obj.text.match(rgx.inline_link_stow_uri)) {
-    debug(links) {
-      writeln("number of link matches to stow: ", (obj.text.match(rgx.inline_link_stow_uri)).count);
-      writeln("links to stow: ", (obj.text.match(rgx.inline_link_stow_uri)));
-    }
-    int _n_matches = (obj.text.match(rgx.inline_link_stow_uri)).count.to!int;
-    for(int i = 0; i < _n_matches; ++i) {
-      if (obj.text.match(rgx.inline_link_stow_uri)) {
-        obj.stow.link ~= obj.text.matchFirst(rgx.inline_link_stow_uri)[2];
-        obj.text = obj.text.replaceFirst(
-          rgx.inline_link_stow_uri,
-          format(q"┃┥%s┝┤%s├┃", "$1", i)
-        );
-      }
-    }
-  }
-  return obj;
-}
-#+END_SRC
-
-***** ↻ Loop section: head :loop:head:
-
-#+NAME: abs_post_loop_section_head
-#+BEGIN_SRC d
-foreach (ref obj; the_document_head_section) {
-  if (obj.metainfo.is_a == "heading") {
-    debug(dom) {
-      writeln(obj.text);
-    }
-    if (obj.metainfo.heading_lev_markup <= 4) {
-      segnames_0_to_4 ~= obj.tags.segment_anchor_tag_epub;
-    }
-    if (obj.metainfo.heading_lev_markup == 0) {
-      /+ TODO second hit (of two) with same assertion failure, check, fix and reinstate
-      assert( obj.metainfo.ocn == 1,
-        "Title OCN should be 1 not: " ~ obj.metainfo.ocn.to!string); // bug introduced 0.18.1
-      +/
-      obj.metainfo.ocn = 1;
-      obj.metainfo.identifier = "1";
-      obj.metainfo.object_number_type = OCNtype.ocn;
-    }
-    /+ dom structure (marked up & collapsed) +/
-    if (opt_action.meta_processing_xml_dom) {
-      obj = obj.obj_dom_structure_set_markup_tags(dom_structure_markedup_tags_status, obj.metainfo.heading_lev_markup);
-      obj = obj.obj_dom_set_collapsed_tags(dom_structure_collapsed_tags_status, obj.metainfo.heading_lev_collapsed);
-    }
-    obj = obj.obj_heading_ancestors(lv_ancestors_txt);
-  }
-  obj = _links(obj);
-}
-#+END_SRC
-
-***** ↻ Loop section: toc :loop:table_of_contents:
-
-#+NAME: abs_post_loop_section_toc
-#+BEGIN_SRC d
-if (the_document_toc_section.length > 1) {
-  /+ scroll +/
-  dom_structure_markedup_tags_status_buffer = dom_structure_markedup_tags_status.dup;
-  dom_structure_collapsed_tags_status_buffer = dom_structure_collapsed_tags_status.dup;
-  foreach (ref obj; the_document_toc_section) {
-    if (obj.metainfo.is_a == "heading") {
-      if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_to_4 ~= obj.tags.segment_anchor_tag_epub;
-        if (obj.metainfo.heading_lev_markup == 4) {
-          obj.tags.segname_next = segnames["html"][obj.ptr.html_segnames + 1];
-          assert(obj.tags.anchor_tag_html == segnames["html"][obj.ptr.html_segnames],
-            obj.tags.anchor_tag_html ~ "!=" ~ segnames["html"][obj.ptr.html_segnames]);
-        }
-      }
-      /+ dom structure (marked up & collapsed) +/
-      if (opt_action.meta_processing_xml_dom) {
-        obj = obj.obj_dom_structure_set_markup_tags(dom_structure_markedup_tags_status, obj.metainfo.heading_lev_markup);
-        obj = obj.obj_dom_set_collapsed_tags(dom_structure_collapsed_tags_status, obj.metainfo.heading_lev_collapsed);
-      }
-      obj = obj.obj_heading_ancestors(lv_ancestors_txt);
-    }
-    obj = _links(obj);
-  }
-}
-#+END_SRC
-
-***** ↻ Loop section: document body [bd] :loop:body:
-
-#+NAME: abs_post_reloop_section_body
-#+BEGIN_SRC d
-/+ multiple 1~ levels, loop through document body +/
-if (the_document_body_section.length > 1) {
-  foreach (ref obj; the_document_body_section) {
-    if (!(obj.metainfo.identifier.empty)) {
-      if (!(((obj.metainfo.identifier) in tag_assoc)
-        && ("seg_lv4" in tag_assoc[(obj.metainfo.identifier)]))
-      ) {
-        tag_assoc[(obj.metainfo.identifier)]["seg_lv4"]
-        = obj.tags.html_segment_anchor_tag_is;
-      }
-      tag_assoc[(obj.metainfo.identifier)]["seg_lv1to4"]
-      = obj.tags.epub_segment_anchor_tag_is;
-    }
-    if (obj.metainfo.is_a == "heading") {
-      debug(dom) {
-        writeln(obj.text);
-      }
-      if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_to_4 ~= obj.tags.segment_anchor_tag_epub;
-        if (obj.metainfo.heading_lev_markup == 4) {
-          obj.tags.lev4_subtoc = lev4_subtoc[obj.tags.anchor_tag_html];
-          obj.tags.segname_prev = segnames["html"][obj.ptr.html_segnames - 1];
-          if (segnames["html"].length > obj.ptr.html_segnames + 1) {
-            obj.tags.segname_next = segnames["html"][obj.ptr.html_segnames + 1];
-          }
-          assert(obj.tags.anchor_tag_html == segnames["html"][obj.ptr.html_segnames],
-            obj.tags.anchor_tag_html ~ "!=" ~ segnames["html"][obj.ptr.html_segnames]);
-        }
-      }
-      /+ dom structure (marked up & collapsed) +/
-      if (opt_action.meta_processing_xml_dom) {
-        obj = obj.obj_dom_structure_set_markup_tags(dom_structure_markedup_tags_status, obj.metainfo.heading_lev_markup);
-        obj = obj.obj_dom_set_collapsed_tags(dom_structure_collapsed_tags_status, obj.metainfo.heading_lev_collapsed);
-      }
-      obj = obj.obj_heading_ancestors(lv_ancestors_txt);
-    } else if (obj.metainfo.is_a == "para") {
-       _images ~= extract_images(obj.text);
-       obj = _image_dimensions(obj, manifested);
-    }
-    obj = _links(obj);
-  }
-}
-auto image_list = (_images.sort()).uniq;
-#+END_SRC
-
-***** ↻ Loop section: endnotes [en] :loop:endnotes:
-
-- endnotes have their own number, (also use in node) and they belong to calling object
-
-#+NAME: abs_post_reloop_section_endnotes
-#+BEGIN_SRC d
-/+ optional only one 1~ level +/
-if (the_document_endnotes_section.length > 1) {
-  dom_structure_markedup_tags_status_buffer           = dom_structure_markedup_tags_status.dup;
-  dom_structure_collapsed_tags_status_buffer          = dom_structure_collapsed_tags_status.dup;
-  dom_structure_markedup_tags_status                  = dom_structure_markedup_tags_status_buffer.dup;
-  dom_structure_collapsed_tags_status                 = dom_structure_collapsed_tags_status_buffer.dup;
-  foreach (ref obj; the_document_endnotes_section) {
-    if (obj.metainfo.is_a == "heading") {
-      debug(dom) {
-        writeln(obj.text);
-      }
-      if (obj.metainfo.heading_lev_markup == 1) {
-        obj_cite_digits                               = ocn_emit(eN.ocn.on);
-        obj.metainfo.ocn                              = obj_cite_digits.object_number;
-        obj.metainfo.identifier                       = obj_cite_digits.identifier;
-      }
-      if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_to_4 ~= obj.tags.segment_anchor_tag_epub;
-        if (obj.metainfo.heading_lev_markup == 4) {
-          obj.tags.segname_prev = segnames["html"][obj.ptr.html_segnames - 1];
-          if (segnames["html"].length > obj.ptr.html_segnames + 1) {
-            obj.tags.segname_next = segnames["html"][obj.ptr.html_segnames + 1];
-          }
-          assert(obj.tags.anchor_tag_html == segnames["html"][obj.ptr.html_segnames],
-            obj.tags.anchor_tag_html ~ "!=" ~ segnames["html"][obj.ptr.html_segnames]);
-        }
-      }
-      /+ dom structure (marked up & collapsed) +/
-      if (opt_action.meta_processing_xml_dom) {
-        obj = obj.obj_dom_structure_set_markup_tags(dom_structure_markedup_tags_status, obj.metainfo.heading_lev_markup);
-        obj = obj.obj_dom_set_collapsed_tags(dom_structure_collapsed_tags_status, obj.metainfo.heading_lev_collapsed);
-      }
-      obj = obj.obj_heading_ancestors(lv_ancestors_txt);
-    }
-    obj = _links(obj);
-  }
-}
-#+END_SRC
-
-***** ↻ reLoop section: glossary [gl] :loop:glossary:
-
-- add glossary numbering, (also use in node) no need to show in text
-
-#+NAME: abs_post_reloop_section_glossary_get_numbering
-#+BEGIN_SRC d
-/+ optional only one 1~ level +/
-if (the_document_glossary_section.length > 1) {
-  foreach (ref obj; the_document_glossary_section) {
-    if (obj.metainfo.is_a == "heading") {
-      debug(dom) {
-        writeln(obj.text);
-      }
-      if (obj.metainfo.heading_lev_markup == 1) {
-        obj_cite_digits                               = ocn_emit(eN.ocn.on);
-        obj.metainfo.ocn                              = obj_cite_digits.object_number;
-        obj.metainfo.identifier                       = obj_cite_digits.identifier;
-      }
-      if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_to_4 ~= obj.tags.segment_anchor_tag_epub;
-        if (obj.metainfo.heading_lev_markup == 4) {
-          obj.tags.segname_prev = segnames["html"][obj.ptr.html_segnames - 1];
-          if (segnames["html"].length > obj.ptr.html_segnames + 1) {
-            obj.tags.segname_next = segnames["html"][obj.ptr.html_segnames + 1];
-          }
-          assert(obj.tags.anchor_tag_html == segnames["html"][obj.ptr.html_segnames],
-            obj.tags.anchor_tag_html ~ "!=" ~ segnames["html"][obj.ptr.html_segnames]);
-        }
-      }
-      /+ dom structure (marked up & collapsed) +/
-      if (opt_action.meta_processing_xml_dom) {
-        obj = obj.obj_dom_structure_set_markup_tags(dom_structure_markedup_tags_status, obj.metainfo.heading_lev_markup);
-        obj = obj.obj_dom_set_collapsed_tags(dom_structure_collapsed_tags_status, obj.metainfo.heading_lev_collapsed);
-      }
-      obj = obj.obj_heading_ancestors(lv_ancestors_txt);
-    } else if (obj.metainfo.is_a == "glossary" && !(obj.text.empty)) {
-      obj_cite_digits         = ocn_emit(eN.ocn.on);
-      obj.metainfo.ocn        = obj_cite_digits.object_number;
-      obj.metainfo.identifier = obj_cite_digits.identifier;
-    }
-    obj = _links(obj);
-  }
-}
-#+END_SRC
-
-***** ↻ reLoop section: bibliography [bb] :loop:bibliography:
-
-- add bibliography numbering, (also use in node) no need to show in text
-
-#+NAME: abs_post_reloop_section_biblio_get_numbering
-#+BEGIN_SRC d
-/+ optional only one 1~ level +/
-if (the_document_bibliography_section.length > 1) {
-  foreach (ref obj; the_document_bibliography_section) {
-    if (obj.metainfo.is_a == "heading") {
-      debug(dom) {
-        writeln(obj.text);
-      }
-      if (obj.metainfo.heading_lev_markup == 1) {
-        obj_cite_digits                               = ocn_emit(eN.ocn.on);
-        obj.metainfo.ocn                              = obj_cite_digits.object_number;
-        obj.metainfo.identifier                       = obj_cite_digits.identifier;
-      }
-      if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_to_4 ~= obj.tags.segment_anchor_tag_epub;
-        if (obj.metainfo.heading_lev_markup == 4) {
-          obj.tags.segname_prev = segnames["html"][obj.ptr.html_segnames - 1];
-          if (segnames["html"].length > obj.ptr.html_segnames + 1) {
-            obj.tags.segname_next = segnames["html"][obj.ptr.html_segnames + 1];
-          }
-          assert(obj.tags.anchor_tag_html == segnames["html"][obj.ptr.html_segnames],
-            obj.tags.anchor_tag_html ~ "!=" ~ segnames["html"][obj.ptr.html_segnames]);
-        }
-      }
-      /+ dom structure (marked up & collapsed) +/
-      if (opt_action.meta_processing_xml_dom) {
-        obj = obj.obj_dom_structure_set_markup_tags(dom_structure_markedup_tags_status, obj.metainfo.heading_lev_markup);
-        obj = obj.obj_dom_set_collapsed_tags(dom_structure_collapsed_tags_status, obj.metainfo.heading_lev_collapsed);
-      }
-      obj = obj.obj_heading_ancestors(lv_ancestors_txt);
-    } else if (obj.metainfo.is_a == "bibliography") {
-      obj_cite_digits                                 = ocn_emit(eN.ocn.on);
-      obj.metainfo.ocn                                = obj_cite_digits.object_number;
-      obj.metainfo.identifier                         = obj_cite_digits.identifier;
-    }
-    obj = _links(obj);
-  }
-}
-#+END_SRC
-
-***** ↻ Loop section: book index (scroll, seg) [bi] :loop:bookindex:
-
-- add book index numbering?, (also use in node) no need to show in text
-
-#+NAME: abs_post_reloop_section_bookindex_get_index
-#+BEGIN_SRC d
-/+ optional only one 1~ level +/
-int ocn_       = obj_cite_digits.object_number;
-int ocn_bkidx_ = 0;
-int ocn_bidx_;
-if (the_document_bookindex_section.length > 1) {                                        /+ scroll +/
-  dom_structure_markedup_tags_status_buffer = dom_structure_markedup_tags_status.dup;
-  dom_structure_collapsed_tags_status_buffer = dom_structure_collapsed_tags_status.dup;
-  foreach (ref obj; the_document_bookindex_section) {
-    if (obj.metainfo.is_a == "heading") {
-      debug(dom) {
-      }
-      if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_to_4 ~= obj.tags.segment_anchor_tag_epub;
-      }
-      if (obj.metainfo.heading_lev_markup == 1) {
-        obj_cite_digits                               = ocn_emit(eN.ocn.on);
-        obj.metainfo.ocn                              = obj_cite_digits.object_number;
-        obj.metainfo.identifier                       = obj_cite_digits.identifier;
-      }
-      if (obj.metainfo.heading_lev_markup <= 4) {
-        if (obj.metainfo.heading_lev_markup == 4) {
-          obj.tags.segname_prev = segnames["html"][obj.ptr.html_segnames - 1];
-          if (segnames["html"].length > obj.ptr.html_segnames + 1) {
-            obj.tags.segname_next = segnames["html"][obj.ptr.html_segnames + 1];
-          }
-          assert(obj.tags.anchor_tag_html == segnames["html"][obj.ptr.html_segnames],
-            obj.tags.anchor_tag_html ~ "!=" ~ segnames["html"][obj.ptr.html_segnames]);
-        }
-      }
-      /+ dom structure (marked up & collapsed) +/
-      if (opt_action.meta_processing_xml_dom) {
-        obj = obj.obj_dom_structure_set_markup_tags(dom_structure_markedup_tags_status, obj.metainfo.heading_lev_markup);
-        obj = obj.obj_dom_set_collapsed_tags(dom_structure_collapsed_tags_status, obj.metainfo.heading_lev_collapsed);
-      }
-      obj = obj.obj_heading_ancestors(lv_ancestors_txt);
-    } else if (obj.metainfo.is_a == "bookindex") {
-      obj_cite_digits                                 = ocn_emit(eN.ocn.bkidx);
-      obj.metainfo.ocn                                = obj_cite_digits.object_number;
-      obj.metainfo.identifier                         = obj_cite_digits.identifier;
-      obj.metainfo.o_n_book_index                     = obj_cite_digits.bkidx;
-      obj.metainfo.object_number_type                 = OCNtype.bkidx;
-    }
-    obj = _links(obj);
-  }
-  /+ TODO assert failure, reinstate
-  assert(obj_cite_digit_bkidx == ocn_bidx_
-    obj_cite_digit_bkidx ~ " == ocn_" ~ ocn_ ~ "?");
-  +/
-}
-#+END_SRC
-
-***** ↻ Loop section: blurb [bl] :loop:blurb:
-
-#+NAME: abs_post_reloop_section_blurb_get_numbering
-#+BEGIN_SRC d
-/+ optional only one 1~ level +/
-if (the_document_blurb_section.length > 1) {
-  foreach (ref obj; the_document_blurb_section) {
-    if (obj.metainfo.is_a == "heading") {
-      debug(dom) {
-        writeln(obj.text);
-      }
-      if (obj.metainfo.heading_lev_markup == 1) {
-        obj_cite_digits                               = ocn_emit(eN.ocn.on);
-        obj.metainfo.ocn                              = obj_cite_digits.object_number;
-        obj.metainfo.identifier                       = obj_cite_digits.identifier;
-      }
-      if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_to_4 ~= obj.tags.segment_anchor_tag_epub;
-        if (obj.metainfo.heading_lev_markup == 4) {
-          obj.tags.segname_prev = segnames["html"][obj.ptr.html_segnames - 1];
-          if (segnames["html"].length > obj.ptr.html_segnames + 1) {
-            obj.tags.segname_next = segnames["html"][obj.ptr.html_segnames + 1];
-          }
-          assert(obj.tags.anchor_tag_html == segnames["html"][obj.ptr.html_segnames],
-            obj.tags.anchor_tag_html ~ "!=" ~ segnames["html"][obj.ptr.html_segnames]);
-        }
-      }
-      /+ dom structure (marked up & collapsed) +/
-      if (opt_action.meta_processing_xml_dom) {
-        obj = obj.obj_dom_structure_set_markup_tags(dom_structure_markedup_tags_status, obj.metainfo.heading_lev_markup);
-        obj = obj.obj_dom_set_collapsed_tags(dom_structure_collapsed_tags_status, obj.metainfo.heading_lev_collapsed);
-      }
-      obj = obj.obj_heading_ancestors(lv_ancestors_txt);
-    } else if (obj.metainfo.is_a == "blurb") {
-      obj_cite_digits                                 = ocn_emit(eN.ocn.off);
-      obj.metainfo.object_number_off                  = obj_cite_digits.off;
-      obj.metainfo.object_number_type                 = OCNtype.non;
-    }
-    obj = _links(obj);
-  }
-}
-#+END_SRC
-
-***** ↻ reLoop sections: get decendants :loop:document:
-
-#+NAME: abs_post_reloop_section_all_get_decendants
-#+BEGIN_SRC d
-if (the_document_body_section.length > 1) {
-  auto pairs = get_decendants(
-    the_document_head_section ~
-    the_document_body_section ~
-    the_document_endnotes_section ~
-    the_document_glossary_section ~
-    the_document_bibliography_section ~
-    the_document_bookindex_section ~
-    the_document_blurb_section ~
-    the_document_xml_dom_tail_section
-  );
-  debug(decendants_tuple) {
-    pairs = pairs.sort();
-    foreach (pair; pairs) {  // (pair; pairs.sort())
-      writeln(pair[0], "..", pair[1]);
-    }
-  }
-  foreach (ref obj; the_document_head_section) {
-    if (obj.metainfo.is_a == "heading") {
-      foreach (pair; pairs) {
-        if (obj.metainfo.ocn == pair[0]) {
-          obj.metainfo.last_decendant_ocn = pair[1];
-        }
-      }
-    }
-  }
-  if (the_document_body_section.length > 1) {
-    foreach (ref obj; the_document_body_section) {
-      if (obj.metainfo.is_a == "heading") {
-        foreach (pair; pairs) {
-          if (obj.metainfo.ocn == pair[0]) {
-            obj.metainfo.last_decendant_ocn = pair[1];
-          }
-        }
-      }
-    }
-  }
-  if (the_document_endnotes_section.length > 1) {
-    foreach (ref obj; the_document_endnotes_section) {
-      if (obj.metainfo.is_a == "heading") {
-        foreach (pair; pairs) {
-          if (obj.metainfo.ocn == pair[0]) {
-            obj.metainfo.last_decendant_ocn = pair[1];
-          }
-        }
-      }
-    }
-  }
-  if (the_document_glossary_section.length > 1) {
-    foreach (ref obj; the_document_glossary_section) {
-      if (obj.metainfo.is_a == "heading") {
-        foreach (pair; pairs) {
-          if (obj.metainfo.ocn == pair[0]) {
-            obj.metainfo.last_decendant_ocn = pair[1];
-          }
-        }
-      }
-    }
-  }
-  if (the_document_bibliography_section.length > 1) {
-    foreach (ref obj; the_document_bibliography_section) {
-      if (obj.metainfo.is_a == "heading") {
-        foreach (pair; pairs) {
-          if (obj.metainfo.ocn == pair[0]) {
-            obj.metainfo.last_decendant_ocn = pair[1];
-          }
-        }
-      }
-    }
-  }
-  if (the_document_bookindex_section.length > 1) {
-    foreach (ref obj; the_document_bookindex_section) {
-      if (obj.metainfo.is_a == "heading") {
-        foreach (pair; pairs) {
-          if (obj.metainfo.ocn == pair[0]) {
-            obj.metainfo.last_decendant_ocn = pair[1];
-          }
-        }
-      }
-    }
-  }
-  if (the_document_blurb_section.length > 1) {
-    foreach (ref obj; the_document_blurb_section) {
-      if (obj.metainfo.is_a == "heading") {
-        foreach (pair; pairs) {
-          if (obj.metainfo.ocn == pair[0]) {
-            obj.metainfo.last_decendant_ocn = pair[1];
-          }
-        }
-      }
-    }
-  }
-  if (the_document_xml_dom_tail_section.length > 1) {
-    foreach (ref obj; the_document_xml_dom_tail_section) {
-      if (obj.metainfo.is_a == "heading") {
-        foreach (pair; pairs) {
-          if (obj.metainfo.ocn == pair[0]) {
-            obj.metainfo.last_decendant_ocn = pair[1];
-          }
-        }
-      }
-    }
-  }
-}
-#+END_SRC
-
-**** update TODO BUG?
-
-#+NAME: abs_post_heading_obj_reinitialize
-#+BEGIN_SRC d
-  /+ TODO
-    - note create/insert heading object sole purpose eof close all open tags
-      sort out:
-      - obj.metainfo.dom_structure_markedup_tags_status = dom_structure_markedup_tags_status;
-      - obj.metainfo.dom_structure_collapsed_tags_status = dom_structure_collapsed_tags_status;
-  +/
-comp_obj_heading_                                               = comp_obj_heading_.init;
-comp_obj_heading_.metainfo.is_of_part                           = "empty";
-comp_obj_heading_.metainfo.is_of_section                        = "empty";
-comp_obj_heading_.metainfo.is_of_type                           = "para";
-comp_obj_heading_.metainfo.is_a                                 = "heading";
-comp_obj_heading_.metainfo.ocn                                  = 0;
-comp_obj_heading_.metainfo.identifier                           = "";
-comp_obj_heading_.metainfo.dummy_heading                        = true;
-comp_obj_heading_.metainfo.object_number_off                    = true;
-comp_obj_heading_.metainfo.object_number_type                   = 0;
-comp_obj_heading_.tags.segment_anchor_tag_epub                  = "";
-comp_obj_heading_.tags.anchor_tag_html                          = "";
-comp_obj_heading_.tags.in_segment_html                          = "";
-comp_obj_heading_.tags.html_segment_anchor_tag_is               = "";
-comp_obj_heading_.tags.epub_segment_anchor_tag_is               = "";
-comp_obj_heading_.metainfo.heading_lev_markup                   = 9;
-comp_obj_heading_.metainfo.heading_lev_collapsed                = 9;
-comp_obj_heading_.metainfo.parent_ocn                           = 0;
-comp_obj_heading_.metainfo.parent_lev_markup                    = 0;
-comp_obj_heading_.metainfo.dom_structure_markedup_tags_status   = dom_structure_markedup_tags_status.dup;
-comp_obj_heading_.metainfo.dom_structure_collapsed_tags_status  = dom_structure_collapsed_tags_status.dup;
-comp_obj_heading_ = comp_obj_heading_.obj_dom_structure_set_markup_tags(dom_structure_markedup_tags_status, 0);
-comp_obj_heading_ = comp_obj_heading_.obj_dom_set_collapsed_tags(dom_structure_collapsed_tags_status, 0);
-comp_obj_heading_ = comp_obj_heading_.obj_heading_ancestors(lv_ancestors_txt);
-// the_dom_tail_section                      ~= comp_obj_heading_; // remove tail for now, decide on later
-#+END_SRC
-
-** 4. _return document tuple_ :post:
-*** _the document_ :document:
-
-#+NAME: abs_post_the_document
-#+BEGIN_SRC d
-ObjGenericComposite[][string] document_the = [
-  "head":             the_document_head_section,
-  "toc":              the_document_toc_section,
-  /+ substantive/body: +/
-  "body":             the_document_body_section,
-  /+ backmatter: +/
-  "endnotes":         the_document_endnotes_section,
-  "glossary":         the_document_glossary_section,
-  "bibliography":     the_document_bibliography_section,
-  "bookindex":        the_document_bookindex_section,
-  "blurb":            the_document_blurb_section,
-  /+ dom tail only +/
-  "tail":             the_document_xml_dom_tail_section,
-];
-#+END_SRC
-
-*** document _section keys_ sequence
-
-#+NAME: abs_post_document_parts_keys
-#+BEGIN_SRC d
-string[][string] document_section_keys_sequenced = [
-  "scroll": ["head", "toc", "body",],
-  "seg":    ["head", "toc", "body",],
-  "sql":    ["head", "body",],
-  "latex":  ["head", "toc", "body",]
-];
-if (document_the["endnotes"].length > 1) {
-  document_section_keys_sequenced["scroll"] ~= "endnotes";
-  document_section_keys_sequenced["seg"]    ~= "endnotes";
-  document_section_keys_sequenced["latex"]  ~= "endnotes";
-}
-if (document_the["glossary"].length > 1) {
-  document_section_keys_sequenced["scroll"] ~= "glossary";
-  document_section_keys_sequenced["seg"]    ~= "glossary";
-  document_section_keys_sequenced["sql"]    ~= "glossary";
-  document_section_keys_sequenced["latex"]  ~= "glossary";
-}
-if (document_the["bibliography"].length > 1) {
-  document_section_keys_sequenced["scroll"] ~= "bibliography";
-  document_section_keys_sequenced["seg"]    ~= "bibliography";
-  document_section_keys_sequenced["sql"]    ~= "bibliography";
-  document_section_keys_sequenced["latex"]  ~= "bibliography";
-}
-if (document_the["bookindex"].length > 1) {
-  document_section_keys_sequenced["scroll"] ~= "bookindex";
-  document_section_keys_sequenced["seg"]    ~= "bookindex";
-  document_section_keys_sequenced["sql"]    ~= "bookindex";
-  document_section_keys_sequenced["latex"]  ~= "bookindex";
-}
-if (document_the["blurb"].length > 1) {
-  document_section_keys_sequenced["scroll"] ~= "blurb";
-  document_section_keys_sequenced["seg"]    ~= "blurb";
-  document_section_keys_sequenced["sql"]    ~= "blurb";
-  document_section_keys_sequenced["latex"]  ~= "blurb";
-}
-if ((opt_action.html)
-|| (opt_action.html_scroll)
-|| (opt_action.html_seg)
-|| (opt_action.epub)) {
-  document_section_keys_sequenced["scroll"] ~= "tail";
-  document_section_keys_sequenced["seg"]    ~= "tail";
-}
-#+END_SRC
-
-*** dup
-
-#+NAME: abs_post_document_segnames
-#+BEGIN_SRC d
-string[] segnames_4                 = segnames["html"].dup;
-string[] segnames_lv1to4            = segnames["epub"].dup;
-debug(segnames) {
-  writeln("segnames_lv4:    ", segnames_4);
-  writeln("segnames_lv1to4: ", segnames_lv1to4);
-}
-#+END_SRC
-
-*** clean out structure
-
-#+NAME: abs_post_document_reinitialize
-#+BEGIN_SRC d
-destroy(the_document_head_section);
-destroy(the_document_toc_section);
-destroy(the_document_body_section);
-destroy(the_document_endnotes_section);
-destroy(the_document_glossary_section);
-destroy(the_document_bibliography_section);
-destroy(the_document_bookindex_section);
-destroy(the_document_blurb_section);
-destroy(the_document_xml_dom_tail_section);
-destroy(segnames);
-destroy(bookindex_unordered_hashes);
-destroy(an_object);
-obj_cite_digits                             = ocn_emit(eN.ocn.reset);
-biblio_arr_json                             = [];
-obj_cite_digit_                             = 0;
-html_segnames_ptr                           = 0;
-html_segnames_ptr_cntr                      = 0;
-content_non_header                          = "8";
-dom_structure_markedup_tags_status          = [ 0, 0, 0, 0, 0, 0, 0, 0,];
-dom_structure_markedup_tags_status_buffer   = [ 0, 0, 0, 0, 0, 0, 0, 0,];
-dom_structure_collapsed_tags_status         = [ 0, 0, 0, 0, 0, 0, 0, 0,];
-dom_structure_collapsed_tags_status_buffer  = [ 0, 0, 0, 0, 0, 0, 0, 0,];
-lev_anchor_tag = "";
-anchor_tag = "";
-#+END_SRC
-
-*** doc has struct
-
-#+NAME: abs_struct_doc_has
-#+BEGIN_SRC d
-@safe auto doc_has() {
-  struct DocHas_ {
-    uint inline_links() {
-      return dochas["inline_links"];
-    }
-    uint inline_notes_reg() {
-      return dochas["inline_notes"];
-    }
-    uint inline_notes_star() {
-      return dochas["inline_notes_star"];
-    }
-    uint codeblocks() {
-      return dochas["codeblock"];
-    }
-    uint tables() {
-      return dochas["table"];
-    }
-    uint blocks() {
-      return dochas["block"];
-    }
-    uint groups() {
-      return dochas["group"];
-    }
-    uint poems() {
-      return dochas["poem"];
-    }
-    uint quotes() {
-      return dochas["quote"];
-    }
-    ulong images() { // TODO not ideal rethink
-      return (image_list.to!string.strip("[","]").split(",").length);
-    }
-    auto imagelist() {
-      return image_list;
-    }
-    auto keys_seq() {
-      return docSectKeysSeq!()(document_section_keys_sequenced);
-    }
-    string[] segnames_lv4() {
-      return segnames_4;
-    }
-    string[] segnames_lv_0_to_4() {
-      return segnames_0_to_4;
-    }
-    string[string][string] tag_associations() {
-      return tag_assoc;
-    }
-  }
-  return DocHas_();
-}
-#+END_SRC
-
-*** _return the document tuple_ [#A] :return:tuple:
-
-#+NAME: abs_return_tuple
-#+BEGIN_SRC d
-auto t = tuple(
-  document_the,
-  doc_has,
-);
-return t;
-#+END_SRC
-
-** 5. Functions :abstract:function:
-
-functions used in document abstraction
-
-*** set & resets :reset:
-**** object reset: remove (clean) :object:remove:
-
-#+NAME: abs_functions_object_reset
-#+BEGIN_SRC d
-@safe static string[string] object_reset()(string[string] an_object) {
-  an_object.remove("body_nugget");
-  an_object.remove("substantive");
-  an_object.remove("is");
-  an_object.remove("attrib");
-  an_object.remove("bookindex_nugget");
-  return an_object;
-}
-#+END_SRC
-
-**** set, initialize or re-initialize :set:
-
-#+NAME: abs_functions_header_set_common
-#+BEGIN_SRC d
-@system void flow_common_reset_()(
-  return ref int[string]     line_occur,
-  return ref string[string]  an_object,
-  return ref uint[string]    pith,
-) {
-  line_occur["heading"]                               = eN.bi.off;
-  line_occur["para"]                                  = eN.bi.off;
-  pith["txt_is"]                                      = eN.txt_is.off;
-  an_object                                           = an_object.object_reset;
-}
-#+END_SRC
-
-*** check object_number status in document :ocn:
-
-#+NAME: abs_functions_ocn_status
-#+BEGIN_SRC d
-@safe static uint[string] _check_ocn_status_()(
-  char[]       line,
-  uint[string] pith,
-) {
-  static auto rgx = RgxI();
-  if (!(line.empty)) {
-    if (pith["no_ocn_multiple_objects"] == eN.bi.off) {
-      /+ not multi-line object, check whether object_number is on or turned off +/
-      if (line.matchFirst(rgx.object_number_block_marks)) {                      /+ switch off object_number +/
-        if (line.matchFirst(rgx.object_number_off_block)) {
-          pith["no_ocn_multiple_objects"]             = eN.bi.on;
-          pith["ocn"]                                 = eN.ocn.off;
-          debug(ocnoff) {
-            writeln(line);
-          }
-        }
-        if (line.matchFirst(rgx.object_number_off_block_dummy_heading)) {
-          pith["no_ocn_multiple_objects"]             = eN.bi.on;
-          pith["dummy_heading_multiple_objects"]      = eN.bi.on;
-          pith["ocn"]                                 = eN.ocn.off;
-          debug(ocnoff) {
-            writeln(line);
-          }
-        }
-      } else if (pith["no_ocn_multiple_objects"] == eN.bi.off) {
-          pith["dummy_heading_status"]                = eN.bi.off;
-          if (pith["dummy_heading_multiple_objects"]) {
-            pith["dummy_heading_status"]              = eN.bi.on;
-          }
-          if (line.matchFirst(rgx.object_number_off)) {
-            pith["ocn"]                               = eN.ocn.off;
-          } else if (line.matchFirst(rgx.object_number_off_dummy_heading)) {
-            pith["ocn"]                               = eN.ocn.off;
-            pith["dummy_heading_status"]              = eN.bi.on;
-          } else {
-            pith["ocn"]                               = eN.ocn.on;
-            pith["dummy_heading_status"]              = eN.bi.off;
-          }
-        } else {
-          pith["ocn"] = pith["no_ocn_multiple_objects"];
-        }
-    } else if (pith["no_ocn_multiple_objects"] == eN.bi.on) {
-      if (line.matchFirst(rgx.object_number_off_block_close)) {
-        pith["no_ocn_multiple_objects"]               = eN.bi.off;
-        pith["ocn"]                                   = eN.ocn.on;
-        pith["dummy_heading_status"]                  = eN.bi.off;
-        debug(ocnoff) {
-          writeln(line);
-        }
-      }
-    }
-  }
-  return pith;
-}
-#+END_SRC
-
-*** make substitutions
-**** project
-
-#+NAME: abs_functions_substitutions_user_requested
-#+BEGIN_SRC d
-@safe char[] _doc_header_and_make_substitutions_(CMM)(
-  char[]  line,
-  CMM     conf_make_meta,
-) {
-  enum Substitute { match, markup, }
-  if (conf_make_meta.make.substitute) {
-    foreach(substitution_pair; conf_make_meta.make.substitute) {
-      line = line.replaceAll(
-        regex("\b" ~ substitution_pair[Substitute.match]),
-        substitution_pair[Substitute.markup]
-      );
-    }
-  }
-  return line;
-}
-#+END_SRC
-
-**** fontface
-
-#+NAME: abs_functions_substitutions_fontface
-#+BEGIN_SRC d
-@safe char[] _doc_header_and_make_substitutions_fontface_(CMM)(
-  char[]  line,
-  CMM     conf_make_meta,
-) {
-  enum Substitute { match, markup, }
-  if ( conf_make_meta.make.bold) {
-    line = line.replaceAll(
-      regex("\b" ~ conf_make_meta.make.bold[Substitute.match]),
-      conf_make_meta.make.bold[Substitute.markup]
-    );
-  }
-  if (conf_make_meta.make.emphasis) {
-    line = line.replaceAll(
-      regex("\b" ~ conf_make_meta.make.emphasis[Substitute.match]),
-      conf_make_meta.make.emphasis[Substitute.markup]
-    );
-  }
-  if (conf_make_meta.make.italics) {
-    line = line.replaceAll(
-      regex("\b" ~ conf_make_meta.make.italics[Substitute.match]),
-      conf_make_meta.make.italics[Substitute.markup]
-    );
-  }
-  return line;
-}
-#+END_SRC
-
-*** block :block:
-**** block start (open) block :start:
-***** { block starts function
-
-#+NAME: abs_functions_block_open
-#+BEGIN_SRC d
-@safe void flow_txt_block_start()(
-             char[]         line,
-  return ref uint[string]   pith,
-  return ref uint[string]   dochas,
-  return ref string[string] object_number_poem
-) {
-#+END_SRC
-
-****** block (various) curly open :curly:
-
-#+NAME: abs_functions_block_regex
-#+BEGIN_SRC d
-static auto rgx = RgxI();
-#+END_SRC
-
-******* code
-
-#+NAME: abs_functions_block_curly_open_code
-#+BEGIN_SRC d
-if (auto m = line.matchFirst(rgx.block_curly_code_open)) {
-  dochas["codeblock"]++;
-  an_object["lang"]               = "";
-  an_object["attrib"]             = (m["attrib"]) ? m["attrib"].to!string : "";
-  an_object["syntax"]             = (m["syntax"]) ? m["syntax"].to!string : "";
-  debug(codecurly) {                              // code (curly) open
-    writefln(
-      "* [code curly] %s",
-      line
-    );
-  }
-  pith["block_is"]                = eN.blk_is.code;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.curly;
-#+END_SRC
-
-******* poem
-
-#+NAME: abs_functions_block_curly_open_poem
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_curly_poem_open)) {
-  dochas["poem"]++;
-  an_object["syntax"]             = "";
-  an_object["attrib"]             = (m["attrib"]) ? m["attrib"].to!string : "";
-  an_object["lang"]               = (m["lang"]) ? m["lang"].to!string : "";
-  debug(poem) {                              // poem (curly) open
-    writefln(
-      "* [poem curly] %s",
-      line
-    );
-  }
-  object_number_poem["start"]     = obj_cite_digits.object_number.to!string;
-  pith["block_is"]                = eN.blk_is.poem;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.curly;
-  pith["verse_new"]               = eN.bi.on;
-#+END_SRC
-
-******* group
-
-#+NAME: abs_functions_block_curly_open_group
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_curly_group_open)) {
-  dochas["group"]++;
-  an_object["syntax"]             = "";
-  an_object["attrib"]             = (m["attrib"]) ? m["attrib"].to!string : "";
-  an_object["lang"]               = (m["lang"]) ? m["lang"].to!string : "";
-  debug(group) {                             // group (curly) open
-    writefln(
-      "* [group curly] %s",
-      line
-    );
-  }
-  pith["block_is"]                = eN.blk_is.group;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.curly;
-#+END_SRC
-
-******* block
-
-#+NAME: abs_functions_block_curly_open_block
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_curly_block_open)) {
-  dochas["block"]++;
-  an_object["syntax"]             = "";
-  an_object["attrib"]             = (m["attrib"]) ? m["attrib"].to!string : "";
-  an_object["lang"]               = (m["lang"]) ? m["lang"].to!string : "";
-  debug(block) {
-    writefln(
-      "* [block curly] %s",
-      line
-    );
-  }
-  pith["block_is"]                = eN.blk_is.block;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.curly;
-#+END_SRC
-
-******* quote
-
-#+NAME: abs_functions_block_curly_open_quote
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_curly_quote_open)) {
-  dochas["quote"]++;
-  an_object["syntax"]             = "";
-  an_object["attrib"]             = m["attrib"].to!string;
-  an_object["lang"]               = m["lang"].to!string;
-  debug(quote) {
-    writefln(
-      "* [quote curly] %s",
-      line
-    );
-  }
-  pith["block_is"]                = eN.blk_is.quote;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.curly;
-#+END_SRC
-
-******* table
-
-#+NAME: abs_functions_block_curly_open_table
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_curly_table_open)) {           /+ curly table open +/
-  debug(table) {                             // table (curly) open
-    writefln(
-      "* [table curly] %s",
-      line
-    );
-  }
-  dochas["table"] ++;
-  an_object["table_head"]         = m["attrib"].to!string;
-  an_object["block_type"]         = "curly";
-  pith["block_is"]                = eN.blk_is.table;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.curly;
-#+END_SRC
-
-******* table special
-
-#+NAME: abs_functions_block_curly_open_table_special
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_curly_table_special_markup)) { /+ table: special table block markup syntax! +/
-  dochas["table"]++;
-  an_object["table_head"]         = m["attrib"].to!string;
-  an_object["block_type"]         = "special";
-  pith["block_is"]                = eN.blk_is.table;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.curly_special;
-#+END_SRC
-
-****** block (various) tic open :tic:
-******* code
-
-#+NAME: abs_functions_block_tic_open_code
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_tic_code_open)) {
-  dochas["codeblock"]++;
-  an_object["lang"]               = "";
-  an_object["attrib"]             = (m["attrib"]) ? m["attrib"].to!string : "";
-  an_object["syntax"]             = (m["syntax"]) ? m["syntax"].to!string : "";
-  debug(codetic) {
-    writefln(
-      "* [code tic] %s",
-      line
-    );
-  }
-  pith["block_is"]                = eN.blk_is.code;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.tic;
-#+END_SRC
-
-******* poem
-
-#+NAME: abs_functions_block_tic_open_poem
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_tic_poem_open)) {
-  dochas["poem"]++;
-  an_object["syntax"]             = "";
-  an_object["attrib"]             = (m["attrib"]) ? m["attrib"].to!string : "";
-  an_object["lang"]               = (m["lang"]) ? m["lang"].to!string : "";
-  debug(poem) {
-    writefln(
-      "* [poem tic] %s",
-      line
-    );
-  }
-  object_number_poem["start"]     = obj_cite_digits.object_number.to!string;
-  pith["block_is"]                = eN.blk_is.poem;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.tic;
-  pith["verse_new"]               = eN.bi.on;
-#+END_SRC
-
-******* group
-
-#+NAME: abs_functions_block_tic_open_group
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_tic_group_open)) {
-  dochas["group"]++;
-  an_object["syntax"]             = "";
-  an_object["attrib"]             = (m["attrib"]) ? m["attrib"].to!string : "";
-  an_object["lang"]               = (m["lang"]) ? m["lang"].to!string : "";
-  debug(group) {
-    writefln(
-      "* [group tic] %s",
-      line
-    );
-  }
-  pith["block_is"]                = eN.blk_is.group;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.tic;
-#+END_SRC
-
-******* block
-
-#+NAME: abs_functions_block_tic_open_block
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_tic_block_open)) {
-  dochas["block"]++;
-  an_object["syntax"]             = "";
-  an_object["attrib"]             = (m["attrib"]) ? m["attrib"].to!string : "";
-  an_object["lang"]               = (m["lang"]) ? m["lang"].to!string : "";
-  debug(block) {
-    writefln(
-      "* [block tic] %s",
-      line
-    );
-  }
-  pith["block_is"]                = eN.blk_is.block;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.tic;
-#+END_SRC
-
-******* quote
-
-#+NAME: abs_functions_block_tic_open_quote
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_tic_quote_open)) {
-  dochas["quote"]++;
-  an_object["syntax"]             = "";
-  an_object["attrib"]             = m["attrib"].to!string;
-  an_object["lang"]               = m["lang"].to!string;
-  debug(quote) {                             // quote (tic) open
-    writefln(
-      "* [quote tic] %s",
-      line
-    );
-  }
-  pith["block_is"]                = eN.blk_is.quote;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.tic;
-#+END_SRC
-
-******* table
-
-#+NAME: abs_functions_block_tic_open_table
-#+BEGIN_SRC d
-} else if (auto m = line.matchFirst(rgx.block_tic_table_open)) {             /+ tic table open +/
-  debug(table) {                             // table (tic) open
-    writefln(
-      "* [table tic] %s",
-      line
-    );
-  }
-  dochas["table"] ++;
-  an_object["table_head"]         = m["attrib"].to!string;
-  an_object["block_type"]         = "tic";
-  pith["block_is"]                = eN.blk_is.table;
-  pith["block_state"]             = eN.blk_state.on;
-  pith["block_delim"]             = eN.blk_delim.tic;
-}
-#+END_SRC
-
-***** }
-
-#+NAME: abs_functions_block_close
-#+BEGIN_SRC d
-}
-#+END_SRC
-
-**** block continue (an open block) :continue:
-***** _code block_ (special status, deal with first) :code:
-
-#+NAME: abs_functions_block_code
-#+BEGIN_SRC d
-@safe void flow_txt_block_code()(
-             char[]          line,
-  return ref string[string]  an_object,
-  return ref uint[string]    pith,
-) {
-  static auto rgx = RgxI();
-  if ( pith["block_is"] == eN.blk_is.code) {
-    if (pith["block_delim"] == eN.blk_delim.curly) {
-      if (line.matchFirst(rgx.block_curly_code_close)) {
-        debug(codecurly) {
-          writeln(line);
-        }
-        an_object[an_object_key] = an_object[an_object_key]
-          .replaceFirst(rgx.newline_eol_delimiter_only, "")
-          .stripRight;
-        pith["block_is"]            = eN.blk_is.code;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        debug(codecurly) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    } else if (pith["block_delim"] == eN.blk_delim.tic) {
-      if (line.matchFirst(rgx.block_tic_close)) {
-        debug(codetic) {
-          writeln(line);
-        }
-        an_object[an_object_key] = an_object[an_object_key]
-          .replaceFirst(rgx.newline_eol_delimiter_only, "")
-          .stripRight;
-        pith["block_is"]            = eN.blk_is.code;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        debug(codetic) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    }
-  }
-}
-#+END_SRC
-
-***** biblio block :biblio:
-****** biblio map tags
-
-#+NAME: abs_functions_block_biblio_map_tags
-#+BEGIN_SRC d
-@safe final string biblio_tag_map()(string abr) {
-  auto btm = [
-    "au"        : "author_raw",
-    "ed"        : "editor_raw",
-    "ti"        : "fulltitle",
-    "lng"       : "language",
-    "jo"        : "journal",
-    "vol"       : "volume",
-    "edn"       : "edition",
-    "yr"        : "year",
-    "pl"        : "place",
-    "pb"        : "publisher",
-    "pub"       : "publisher",
-    "pg"        : "pages",
-    "pgs"       : "pages",
-    "sn"        : "short_name"
-  ];
-  return btm[abr];
-}
-#+END_SRC
-
-******* +consider+
-
-#+NAME: none
-#+BEGIN_SRC d
-final string biblio_tag_map_()(string abr) {
-  string name;
-  switch (abr) {
-  case "au"     : name = "author_raw"; break;
-  case "ed"     : name = "editor_raw"; break;
-  case "ti"     : name = "fulltitle";  break;
-  case "lng"    : name = "language";   break;
-  case "jo"     : name = "journal";    break;
-  case "vol"    : name = "volume";     break;
-  case "edn"    : name = "edition";    break;
-  case "yr"     : name = "year";       break;
-  case "pl"     : name = "place";      break;
-  case "pb"     : name = "publisher";  break;
-  case "pub"    : name = "publisher";  break;
-  case "pg"     : name = "pages";      break;
-  case "pgs"    : name = "pages";      break;
-  case "sn"     : name = "short_name"; break;
-  default       : name = abr;          break;
-  }
-  return name;
-}
-#+END_SRC
-
-****** biblio block
-
-#+NAME: abs_functions_block_biblio_text_block
-#+BEGIN_SRC d
-@system void flow_txt_block_biblio(
-  char[]                  line,
-  return ref uint[string] pith,
-  return ref int          bib_entry,
-  return ref string       biblio_entry_str_json,
-  return ref string[]     biblio_arr_json,
-) {
-  mixin spineBiblio;
-  auto jsn = BibJsnStr();
-  static auto rgx = RgxI();
-  if (line.matchFirst(rgx.heading_biblio)) {
-    pith["section"] = eN.sect.bibliography;
-  }
-  if (line.empty) {
-    debug {
-      debug(biblioblock) {
-        writeln("---");
-      }
-      debug(biblioblockinclude) {
-        writeln(biblio_entry_str_json.length);
-      }
-    }
-    if ((bib_entry == eN.bi.off)
-    && (biblio_entry_str_json.empty)) {
-      bib_entry = eN.bi.on;
-      biblio_entry_str_json = jsn.biblio_entry_tags_jsonstr;
-    } else if (!(biblio_entry_str_json.empty)) {
-      bib_entry = eN.bi.off;
-      if (!(biblio_entry_str_json == jsn.biblio_entry_tags_jsonstr)) {
-        auto biblio_entry = parseJSON(biblio_entry_str_json);
-        if (biblio_entry["fulltitle"].str.empty) {
-          writeln("check problem entry (Title missing): ", biblio_entry_str_json);
-        } else if ((biblio_entry["author_raw"].str.empty) && (biblio_entry["editor_raw"].str.empty)) {
-          writeln("check problem entry (No author and no editor): ", biblio_entry_str_json);
-        } else {
-          biblio_arr_json ~= biblio_entry_str_json;
-        }
-        biblio_entry_str_json = jsn.biblio_entry_tags_jsonstr;
-      }
-    } else {
-      writeln("?? 2. ERROR ", biblio_entry_str_json, "??");
-      biblio_entry_str_json = "";
-    }
-  } else if (line.matchFirst(rgx.biblio_tags)) {
-    debug(biblioblock) {
-      writeln(line);
-    }
-    auto bt = line.match(rgx.biblio_tags);
-    bib_entry = eN.bi.off;
-    st = bt.captures[1].to!string;
-    auto header_tag_value = (bt.captures[2]).to!string;
-    JSONValue j = parseJSON(biblio_entry_str_json);
-    biblio_tag_name = (st.match(rgx.biblio_abbreviations))
-      ? (biblio_tag_map(st))
-      : st;
-    j.object[biblio_tag_name] = header_tag_value;
-    debug(bibliounsortedcheckduplicates) {
-      writeln(biblio_tag_name, ": ", header_tag_value);
-      writeln("--");
-    }
-    switch (biblio_tag_name) {
-    case "author_raw": // author_arr author (fn sn)
-      j["author_arr"]
-       = header_tag_value.split(rgx.arr_delimiter);
-      string tmp;
-      biblioAuthorLoop:
-      foreach (au; j["author_arr"].array) {
-        if (auto x = au.str.match(rgx.name_delimiter)) {
-          tmp ~= x.captures[2] ~ " " ~ x.captures[1] ~ ", ";
-        } else {
-          tmp ~= au.str;
-        }
-      }
-      tmp = tmp.replace(rgx.trailing_comma, "");
-      j["author"].str = tmp;
-      goto default;
-    case "editor_raw": // editor_arr editor (fn sn)
-      j["editor_arr"]
-        = header_tag_value.split(rgx.arr_delimiter);
-      string tmp;
-      biblioEditorLoop:
-      foreach (ed; j["editor_arr"].array) {
-        if (auto x = ed.str.match(rgx.name_delimiter)) {
-          tmp ~= x.captures[2] ~ " " ~ x.captures[1] ~ ", ";
-        } else {
-          tmp ~= ed.str;
-        }
-      }
-      tmp = tmp.replace(rgx.trailing_comma, "");
-      j["editor"].str = tmp;
-      goto default;
-    case "fulltitle": // title & subtitle
-      goto default;
-    default:
-      break;
-    }
-    auto s = j.toString();
-    debug(biblio1) {
-      writefln(
-        "* %s: %s\n%s",
-        biblio_tag_name,
-        biblio_tag_entry,
-        j[biblio_tag_name]
-      );
-    }
-    if (line.match(rgx.comment)) {
-      writeln("ERROR", line, "COMMENT");
-      writeln("ERROR", s, "%%");
-    }
-    if (!(match(line, rgx.comment))) {
-      debug(biblioblockinclude) {
-        writeln(line);
-      }
-      biblio_entry_str_json = s;
-    } else {
-      biblio_entry_str_json = "";
-    }
-    header_tag_value        = "";
-  }
-}
-#+END_SRC
-
-***** quote block :quote:
-
-#+NAME: abs_functions_block_quote
-#+BEGIN_SRC d
-@safe string[string] flow_txt_block_quote()(
-             char[]          line,
-             string[string]  an_object,
-  return ref uint[string]    pith,
-) {
-  static auto rgx = RgxI();
-  if (pith["block_is"] == eN.blk_is.quote){
-    if (pith["block_delim"] == eN.blk_delim.curly) {
-      if (line.matchFirst(rgx.block_curly_quote_close)) {
-        debug(quote) {
-          writeln(line);
-        }
-        an_object[an_object_key]    = an_object[an_object_key].stripRight;
-        pith["block_is"]            = eN.blk_is.quote;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        debug(quote) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    } else if (pith["block_delim"] == eN.blk_delim.tic) {
-      if (line.matchFirst(rgx.block_tic_close)) {
-        debug(quote) {
-          writeln(line);
-        }
-        an_object[an_object_key]    = an_object[an_object_key].stripRight;
-        pith["block_is"]            = eN.blk_is.quote;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        debug(quote) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    }
-  }
-  return an_object;
-}
-#+END_SRC
-
-***** group block :group:
-
-- apply inline markup
-- discard leading and newline whitespace
-
-#+NAME: abs_functions_block_group
-#+BEGIN_SRC d
-@safe string[string] flow_txt_block_group()(
-             char[]          line,
-             string[string]  an_object,
-  return ref uint[string]    pith,
-) {
-  static auto rgx = RgxI();
-  if (pith["block_is"] == eN.blk_is.group) {
-    if (pith["block_delim"] == eN.blk_delim.curly) {
-      if (line.matchFirst(rgx.block_curly_group_close)) {
-        debug(group) {
-          writeln(line);
-        }
-        an_object[an_object_key]    = an_object[an_object_key].stripRight;
-        pith["block_is"]            = eN.blk_is.group;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        debug(group) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    } else if (pith["block_delim"] == eN.blk_delim.tic) {
-      if (line.matchFirst(rgx.block_tic_close)) {
-        debug(group) {
-          writeln(line);
-        }
-        an_object[an_object_key]    = an_object[an_object_key].stripRight;
-        pith["block_is"]            = eN.blk_is.group;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        debug(group) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    }
-  }
-  return an_object;
-}
-#+END_SRC
-
-***** block block :block:
-
-- apply inline markup
-- keep whitespace indentation
-- keep newlines
-
-#+NAME: abs_functions_block_block
-#+BEGIN_SRC d
-@safe string[string] flow_txt_block_block()(
-             char[]          line,
-             string[string]  an_object,
-  return ref uint[string]    pith,
-) {
-  static auto rgx = RgxI();
-  if (pith["block_is"] == eN.blk_is.block) {
-    if (pith["block_delim"] == eN.blk_delim.curly) {
-      if (line.matchFirst(rgx.block_curly_block_close)) {
-        debug(block) {
-          writeln(line);
-        }
-        an_object[an_object_key]    = an_object[an_object_key].stripRight;
-        pith["block_is"]            = eN.blk_is.block;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        debug(block) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    } else if (pith["block_delim"] == eN.blk_delim.tic) {
-      if (line.matchFirst(rgx.block_tic_close)) {
-        debug(block) {
-          writeln(line);
-        }
-        an_object[an_object_key]    = an_object[an_object_key].stripRight;
-        pith["block_is"]            = eN.blk_is.block;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        debug(block) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    }
-  }
-  return an_object;
-}
-#+END_SRC
-
-***** poem block, verse objects :poem:verse:
-
-why extra object stuff only in poem/verse?
-
-#+NAME: abs_functions_block_poem
-#+BEGIN_SRC d
-@safe string[string]  flow_txt_block_poem(CMM)(
-             char[]          line,
-             string[string]  an_object,
-  return ref uint[string]    pith,
-  return ref int             cntr,
-             string[string]  object_number_poem,
-             CMM             conf_make_meta,
-             string[string]  tag_in_seg,
-) {
-  static auto rgx = RgxI();
-  if (pith["block_is"] == eN.blk_is.poem) {
-    if (pith["block_delim"] == eN.blk_delim.curly) {
-      if (line.matchFirst(rgx.block_curly_poem_close)) {
-        if (an_object_key in an_object
-        || processing.length > 0) {
-          an_object[an_object_key]        = "";
-          debug(poem) {
-            writefln(
-              "* [poem curly] %s",
-              line
-            );
-          }
-          if (processing.length > 0) {
-            an_object[an_object_key]      = processing["verse"];
-          }
-          debug(poem) {
-            writeln(__LINE__);
-            writefln(
-              "* %s %s",
-              obj_cite_digits.object_number,
-              line
-            );
-          }
-          if (an_object.length > 0) {
-            debug(poem) {
-              writeln(
-                obj_cite_digits.object_number,
-                an_object[an_object_key]
-              );
-            }
-            an_object["is"]                                   = "verse";
-            TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_obj_misc_tuple
-              = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, No._new_doc);
-            an_object["substantive"]                          = substantive_obj_misc_tuple[sObj.content];
-            anchor_tag                                        = substantive_obj_misc_tuple[sObj.anchor_tag];
-            comp_obj_block                                    = comp_obj_block.init;
-            comp_obj_block.metainfo.is_of_part                = "body";
-            comp_obj_block.metainfo.is_of_section             = "body";
-            comp_obj_block.metainfo.is_of_type                = "block";
-            comp_obj_block.metainfo.is_a                      = "verse";
-            comp_obj_block.metainfo.ocn                       = obj_cite_digits.object_number;
-            comp_obj_block.metainfo.identifier                = obj_cite_digits.identifier;
-            comp_obj_block.metainfo.object_number_off         = obj_cite_digits.off;
-            comp_obj_block.metainfo.o_n_book_index            = obj_cite_digits.bkidx;
-            comp_obj_block.metainfo.object_number_type        = obj_cite_digits.type;
-            comp_obj_block.tags.html_segment_anchor_tag_is    = tag_in_seg["seg_lv4"];
-            comp_obj_block.tags.epub_segment_anchor_tag_is    = tag_in_seg["seg_lv1to4"];
-            comp_obj_block.text                               = an_object["substantive"];
-            comp_obj_block.has.inline_notes_reg               = substantive_obj_misc_tuple[sObj.notes_reg];
-            comp_obj_block.has.inline_notes_star              = substantive_obj_misc_tuple[sObj.notes_star];
-            comp_obj_block.has.inline_links                   = substantive_obj_misc_tuple[sObj.links];
-            the_document_body_section                         ~= comp_obj_block;
-            tag_assoc                                         = an_object.inline_para_link_anchor(tag_in_seg, tag_assoc);
-          }
-          object_reset(an_object);
-          processing.remove("verse");
-          ++cntr;
-        }
-        object_number_poem["end"]   = obj_cite_digits.object_number.to!string;
-        pith["block_is"]            = eN.blk_is.poem;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        processing["verse"] ~= line ~= "\n";
-        if (pith["verse_new"] == eN.bi.on) {
-          obj_cite_digits = ocn_emit(pith["ocn"]);
-          pith["verse_new"]         = eN.bi.off;
-        } else if (line.matchFirst(rgx.newline_eol_delimiter_only)) {
-          processing["verse"]       = processing["verse"].stripRight;
-          verse_line                = eN.bi.off;
-          pith["verse_new"]         = eN.bi.on;
-        }
-        if (pith["verse_new"] == eN.bi.on) {
-          verse_line = 1;
-          an_object[an_object_key]  = processing["verse"];
-          debug(poem) {
-            writefln(
-              "* %s curly\n%s",
-              obj_cite_digits.object_number,
-              an_object[an_object_key]
-            );
-          }
-          processing.remove("verse");
-          an_object["is"]                                     = "verse";
-          auto comp_obj_location = node_construct.node_location_emitter(
-            content_non_header,
-            tag_in_seg,
-            lev_anchor_tag,
-            tag_assoc,
-            obj_cite_digits,
-            cntr,
-            heading_ptr-1,
-            an_object["is"]
-          );
-          TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_obj_misc_tuple
-            = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, No._new_doc);
-          an_object["substantive"]                            = substantive_obj_misc_tuple[sObj.content];
-          anchor_tag                                          = substantive_obj_misc_tuple[sObj.anchor_tag];
-          comp_obj_block                                      = comp_obj_block.init;
-          comp_obj_block.metainfo.is_of_part                  = "body";
-          comp_obj_block.metainfo.is_of_section               = "body";
-          comp_obj_block.metainfo.is_of_type                  = "block";
-          comp_obj_block.metainfo.is_a                        = "verse";
-          comp_obj_block.metainfo.ocn                         = obj_cite_digits.object_number;
-          comp_obj_block.metainfo.identifier                  = obj_cite_digits.identifier;
-          comp_obj_block.metainfo.object_number_off           = obj_cite_digits.off;
-          comp_obj_block.metainfo.o_n_book_index              = obj_cite_digits.bkidx;
-          comp_obj_block.metainfo.object_number_type          = obj_cite_digits.type;
-          comp_obj_block.tags.html_segment_anchor_tag_is      = tag_in_seg["seg_lv4"];
-          comp_obj_block.tags.epub_segment_anchor_tag_is      = tag_in_seg["seg_lv1to4"];
-          comp_obj_block.text                                 = an_object["substantive"];
-          comp_obj_block.has.inline_notes_reg                 = substantive_obj_misc_tuple[sObj.notes_reg];
-          comp_obj_block.has.inline_notes_star                = substantive_obj_misc_tuple[sObj.notes_star];
-          comp_obj_block.has.inline_links                     = substantive_obj_misc_tuple[sObj.links];
-          the_document_body_section                           ~= comp_obj_block;
-          tag_assoc                                           = an_object.inline_para_link_anchor(tag_in_seg, tag_assoc);
-          object_reset(an_object);
-          processing.remove("verse");
-          ++cntr;
-        }
-      }
-    } else if (pith["block_delim"] == eN.blk_delim.tic) {
-      if (auto m = line.matchFirst(rgx.block_tic_close)) {
-        an_object[an_object_key] = "verse";
-        debug(poem) {
-          writefln(
-            "* [poem tic] %s",
-            line
-          );
-        }
-        if (processing.length > 0) {
-          an_object[an_object_key]  = processing["verse"];
-        }
-        if (an_object.length > 0) {
-          debug(poem) {
-            writeln(__LINE__);
-            writeln(obj_cite_digits.object_number, line);
-          }
-          processing.remove("verse");
-          an_object["is"]                                     = "verse";
-          TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_obj_misc_tuple
-            = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, No._new_doc);
-          an_object["substantive"]                            = substantive_obj_misc_tuple[sObj.content];
-          anchor_tag                                          = substantive_obj_misc_tuple[sObj.anchor_tag];
-          comp_obj_block                                      = comp_obj_block.init;
-          comp_obj_block.metainfo.is_of_part                  = "body";
-          comp_obj_block.metainfo.is_of_section               = "body";
-          comp_obj_block.metainfo.is_of_type                  = "block";
-          comp_obj_block.metainfo.is_a                        = "verse";
-          comp_obj_block.metainfo.ocn                         = obj_cite_digits.object_number;
-          comp_obj_block.metainfo.identifier                  = obj_cite_digits.identifier;
-          comp_obj_block.metainfo.object_number_off           = obj_cite_digits.off;
-          comp_obj_block.metainfo.o_n_book_index              = obj_cite_digits.bkidx;
-          comp_obj_block.metainfo.object_number_type          = obj_cite_digits.type;
-          comp_obj_block.tags.html_segment_anchor_tag_is      = tag_in_seg["seg_lv4"];
-          comp_obj_block.tags.epub_segment_anchor_tag_is      = tag_in_seg["seg_lv1to4"];
-          comp_obj_block.text                                 = an_object["substantive"];
-          comp_obj_block.has.inline_notes_reg                 = substantive_obj_misc_tuple[sObj.notes_reg];
-          comp_obj_block.has.inline_notes_star                = substantive_obj_misc_tuple[sObj.notes_star];
-          comp_obj_block.has.inline_links                     = substantive_obj_misc_tuple[sObj.links];
-          the_document_body_section                           ~= comp_obj_block;
-          tag_assoc                                           = an_object.inline_para_link_anchor(tag_in_seg, tag_assoc);
-          object_number_poem["end"]                           = obj_cite_digits.object_number.to!string;
-          object_reset(an_object);
-          processing.remove("verse");
-          ++cntr;
-        }
-        pith["block_is"]            = eN.blk_is.poem;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        processing["verse"]         ~= line ~= "\n";
-        if (pith["verse_new"] == eN.bi.on) {
-          obj_cite_digits           = ocn_emit(pith["ocn"]);
-          pith["verse_new"]         = eN.bi.off;
-        } else if (line.matchFirst(rgx.newline_eol_delimiter_only)) {
-          processing["verse"]       = processing["verse"].stripRight;
-          pith["verse_new"]         = eN.bi.on;
-          verse_line                = eN.bi.off;
-        }
-        if (pith["verse_new"] == eN.bi.on) {
-          verse_line = 1;
-          an_object[an_object_key]  = processing["verse"];
-          debug(poem) {
-            writefln(
-              "* %s tic\n%s",
-              obj_cite_digits.object_number,
-              an_object[an_object_key]
-            );
-          }
-          processing.remove("verse");
-          an_object["is"]                                     = "verse";
-          auto comp_obj_location
-            = node_construct.node_location_emitter(
-              content_non_header,
-              tag_in_seg,
-              lev_anchor_tag,
-              tag_assoc,
-              obj_cite_digits,
-              cntr,
-              heading_ptr-1,
-              an_object["is"]
-            );
-          TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_obj_misc_tuple
-            = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, No._new_doc);
-          an_object["substantive"]                            = substantive_obj_misc_tuple[sObj.content];
-          anchor_tag                                          = substantive_obj_misc_tuple[sObj.anchor_tag];
-          comp_obj_block                                      = comp_obj_block.init;
-          comp_obj_block.metainfo.is_of_part                  = "body";
-          comp_obj_block.metainfo.is_of_section               = "body";
-          comp_obj_block.metainfo.is_of_type                  = "block";
-          comp_obj_block.metainfo.is_a                        = "verse";
-          comp_obj_block.metainfo.ocn                         = obj_cite_digits.object_number;
-          comp_obj_block.metainfo.identifier                  = obj_cite_digits.identifier;
-          comp_obj_block.metainfo.object_number_off           = obj_cite_digits.off;
-          comp_obj_block.metainfo.o_n_book_index              = obj_cite_digits.bkidx;
-          comp_obj_block.metainfo.object_number_type          = obj_cite_digits.type;
-          comp_obj_block.tags.html_segment_anchor_tag_is      = tag_in_seg["seg_lv4"];
-          comp_obj_block.tags.epub_segment_anchor_tag_is      = tag_in_seg["seg_lv1to4"];
-          comp_obj_block.text                                 = an_object["substantive"];
-          comp_obj_block.has.inline_notes_reg                 = substantive_obj_misc_tuple[sObj.notes_reg];
-          comp_obj_block.has.inline_notes_star                = substantive_obj_misc_tuple[sObj.notes_star];
-          comp_obj_block.has.inline_links                     = substantive_obj_misc_tuple[sObj.links];
-          the_document_body_section                           ~= comp_obj_block;
-          tag_assoc                                           = an_object.inline_para_link_anchor(tag_in_seg, tag_assoc);
-          object_reset(an_object);
-          processing.remove("verse");
-          ++cntr;
-        }
-      }
-    }
-  }
-  return an_object;
-}
-#+END_SRC
-
-***** table block :table:
-
-there are 3 types of table markup that need to be nomalized (given a single representation) here
-
-- curly brace block
-- tic block
-- special notation block
-
-you need:
-- identify the type for the munging to create uniform presentation
-  - curly, tick, special
-  - table heading row, bool
-- present table header info in uniform way
-  - table_number_of_columns, int (count)
-  - table_column_widths, int[] column widths (as given or calculate average)
-  - show table walls, bool
-- table content marked up in uniform way
-
-#+NAME: abs_functions_block_table
-#+BEGIN_SRC d
-@system string[string] flow_txt_block_table(CMM)(
-             char[]          line,
-             string[string]  an_object,
-  return ref uint[string]    pith,
-  return ref CMM             conf_make_meta,
-) {
-  static auto rgx = RgxI();
-  if (pith["block_is"] == eN.blk_is.table) {
-    if (pith["block_delim"] == eN.blk_delim.curly) {
-      if (line.matchFirst(rgx.block_curly_table_close)) {
-        debug(table) {
-          writeln(line);
-        }
-        pith["block_is"]            = eN.blk_is.table;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        debug(table) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    } else if (pith["block_delim"] == eN.blk_delim.curly_special) {
-      if (line.empty) {
-        pith["block_is"]            = eN.blk_is.table;
-        pith["block_state"]         = eN.blk_state.off;
-        pith["block_delim"]         = eN.blk_delim.off;
-        line.flow_table_closed_make_special_notation_table_(
-          an_object,
-          the_document_body_section,
-          obj_cite_digits,
-          comp_obj_heading,
-          cntr,
-          pith,
-          conf_make_meta,
-        );
-      } else {
-        debug(table) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    } else if (pith["block_delim"] == eN.blk_delim.tic) {
-      if (line.matchFirst(rgx.block_tic_close)) {
-        debug(table) {
-          writeln(line);
-        }
-        pith["block_is"]            = eN.blk_is.table;
-        pith["block_state"]         = eN.blk_state.closing;
-        pith["block_delim"]         = eN.blk_delim.off;
-      } else {
-        debug(table) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    }
-  }
-  return an_object;
-}
-#+END_SRC
-
-**** special table notation, make: table
-
-process and use an_object["table_head"] (then empty it)
-- present table header info in uniform way
-  - table_number_of_columns, int (count)
-  - table_column_widths, int[] column widths (as given or calculate average)
-  - show table walls, bool
-
-#+NAME: abs_functions_block_line_status_empty_table_closed
-#+BEGIN_SRC d
-@system void flow_table_closed_make_special_notation_table_(N,CMM)(
-             char[]                line,
-  return ref string[string]        an_object,
-  return ref ObjGenericComposite[] the_document_body_section,
-  return ref N                     obj_cite_digits,
-  return ref ObjGenericComposite   _comp_obj_heading,
-  return ref int                   cntr,
-  return ref uint[string]          pith,
-  CMM                              conf_make_meta
-) {
-  comp_obj_block = comp_obj_block.init;
-  obj_cite_digits = ocn_emit(pith["ocn"]);
-  auto comp_obj_location
-    = node_construct.node_location_emitter(
-      content_non_header,
-      tag_in_seg,
-      lev_anchor_tag,
-      tag_assoc,
-      obj_cite_digits,
-      cntr,
-      heading_ptr-1,
-      "table"
-    );
-  an_object["is"]                                             = "table";
-  TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_obj_misc_tuple
-    = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, "body_nugget", conf_make_meta, No._new_doc);
-  an_object["substantive"]                                    = substantive_obj_misc_tuple[sObj.content];
-  comp_obj_block.metainfo.ocn                                 = obj_cite_digits.object_number;
-  comp_obj_block.metainfo.identifier                          = obj_cite_digits.identifier;
-  comp_obj_block.metainfo.object_number_off                   = obj_cite_digits.off;
-  comp_obj_block.tags.html_segment_anchor_tag_is              = tag_in_seg["seg_lv4"];
-  comp_obj_block.tags.epub_segment_anchor_tag_is              = tag_in_seg["seg_lv1to4"];
-  comp_obj_block.metainfo.o_n_book_index                      = obj_cite_digits.bkidx;
-  comp_obj_block.metainfo.object_number_type                  = obj_cite_digits.type;
-  comp_obj_block                                              = comp_obj_block.flow_table_instructions(an_object["table_head"]);
-  comp_obj_block                                              = comp_obj_block.flow_table_substantive_munge_special(an_object["substantive"]);
-  the_document_body_section                                   ~= comp_obj_block;
-  object_reset(an_object);
-  processing.remove("verse");
-  ++cntr;
-}
-#+END_SRC
-
-**** block end (close an open block): line empty, block flag _makes_ :close:
-
-***** { line empty, _make block_
-
-#+NAME: abs_functions_block_line_status_empty_block_close_function_open
-#+BEGIN_SRC d
-@system string[string] flow_block_flag_line_empty_(B,N,CMM,Ts)(
-             char[]                   line,
-             string[string]           an_object,
-             B                        bookindex_extract_hash,
-  return ref ObjGenericComposite[]    the_document_body_section,
-  return ref string[][string][string] bookindex_unordered_hashes,
-  return ref N                        obj_cite_digits,
-  return ref ObjGenericComposite      _comp_obj_heading,
-  return ref int                      cntr,
-  return ref uint[string]             pith,
-  string[string]                      object_number_poem,
-  CMM                                 conf_make_meta,
-  Ts                                  tag_in_seg,
-) {
-  assert(
-    line.empty,
-    "\nline should be empty:\n  \""
-    ~ line ~ "\""
-  );
-  assert(
-    (pith["block_state"] == eN.blk_state.closing),
-    "code block status: closed"
-  );
-  static auto rgx = RgxI();
-  if (pith["block_state"] == eN.blk_state.closing) {
-#+END_SRC
-
-****** make: quote block
-
-#+NAME: abs_functions_block_line_status_empty_block_quote
-#+BEGIN_SRC d
-if (pith["block_is"] == eN.blk_is.quote) {
-  obj_cite_digits = ocn_emit(pith["ocn"]);
-  an_object["bookindex_nugget"]
-    = ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-  bookindex_unordered_hashes
-    = bookindex_extract_hash.bookindex_nugget_hash(
-      an_object["bookindex_nugget"],
-      obj_cite_digits,
-      tag_in_seg
-    );
-  an_object["is"]                                         = "quote";
-  auto comp_obj_location
-    = node_construct.node_location_emitter(
-      content_non_header,
-      tag_in_seg,
-      lev_anchor_tag,
-      tag_assoc,
-      obj_cite_digits,
-      cntr,
-      heading_ptr-1,
-      an_object["is"]
-    );
-  TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_obj_misc_tuple
-    = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, No._new_doc);
-  an_object["substantive"]                                = substantive_obj_misc_tuple[sObj.content];
-  anchor_tag                                              = substantive_obj_misc_tuple[sObj.anchor_tag];
-  comp_obj_block                                          = comp_obj_block.init;
-  comp_obj_block.metainfo.is_of_part                      = "body";
-  comp_obj_block.metainfo.is_of_section                   = "body";
-  comp_obj_block.metainfo.is_of_type                      = "block";
-  comp_obj_block.metainfo.is_a                            = "quote";
-  comp_obj_block.metainfo.ocn                             = obj_cite_digits.object_number;
-  comp_obj_block.metainfo.identifier                      = obj_cite_digits.identifier;
-  comp_obj_block.metainfo.object_number_off               = obj_cite_digits.off;
-  comp_obj_block.metainfo.o_n_book_index                  = obj_cite_digits.bkidx;
-  comp_obj_block.metainfo.object_number_type              = obj_cite_digit_type;
-  comp_obj_block.metainfo.lang                            = an_object["lang"];
-  comp_obj_block.metainfo.attrib                          = an_object["attrib"];
-  comp_obj_block.tags.html_segment_anchor_tag_is          = tag_in_seg["seg_lv4"];
-  comp_obj_block.tags.epub_segment_anchor_tag_is          = tag_in_seg["seg_lv1to4"];
-  comp_obj_block.text                                     = an_object["substantive"];
-  comp_obj_block.has.inline_notes_reg                     = substantive_obj_misc_tuple[sObj.notes_reg];
-  comp_obj_block.has.inline_notes_star                    = substantive_obj_misc_tuple[sObj.notes_star];
-  comp_obj_block.has.inline_links                         = substantive_obj_misc_tuple[sObj.links];
-  the_document_body_section                               ~= comp_obj_block;
-  tag_assoc                                               = an_object.inline_para_link_anchor(tag_in_seg, tag_assoc);
-  pith["block_is"]                                        = eN.blk_is.quote;
-  pith["block_state"]                                     = eN.blk_state.off;
-  pith["block_delim"]                                     = eN.blk_delim.off;
-  object_reset(an_object);
-  processing.remove("verse");
-  ++cntr;
-#+END_SRC
-
-****** make: group block
-
-#+NAME: abs_functions_block_line_status_empty_block_group
-#+BEGIN_SRC d
-} else if (pith["block_is"] == eN.blk_is.group) {
-  obj_cite_digits = ocn_emit(pith["ocn"]);
-  an_object["bookindex_nugget"]
-    = ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-  bookindex_unordered_hashes
-    = bookindex_extract_hash.bookindex_nugget_hash(
-      an_object["bookindex_nugget"],
-      obj_cite_digits,
-      tag_in_seg
-    );
-  an_object["is"]                                         = "group";
-  auto comp_obj_location
-    = node_construct.node_location_emitter(
-      content_non_header,
-      tag_in_seg,
-      lev_anchor_tag,
-      tag_assoc,
-      obj_cite_digits,
-      cntr,
-      heading_ptr-1,
-      an_object["is"]
-    );
-  TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_obj_misc_tuple
-    = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, No._new_doc);
-  an_object["substantive"]                                = substantive_obj_misc_tuple[sObj.content];
-  anchor_tag                                              = substantive_obj_misc_tuple[sObj.anchor_tag];
-  comp_obj_block                                          = comp_obj_block.init;
-  comp_obj_block.metainfo.is_of_part                      = "body";
-  comp_obj_block.metainfo.is_of_section                   = "body";
-  comp_obj_block.metainfo.is_of_type                      = "block";
-  comp_obj_block.metainfo.is_a                            = "group";
-  comp_obj_block.metainfo.ocn                             = obj_cite_digits.object_number;
-  comp_obj_block.metainfo.identifier                      = obj_cite_digits.identifier;
-  comp_obj_block.metainfo.object_number_off               = obj_cite_digits.off;
-  comp_obj_block.metainfo.o_n_book_index                  = obj_cite_digits.bkidx;
-  comp_obj_block.metainfo.object_number_type              = obj_cite_digits.type;
-  comp_obj_block.metainfo.lang                            = an_object["lang"];
-  comp_obj_block.metainfo.attrib                          = an_object["attrib"];
-  comp_obj_block.tags.html_segment_anchor_tag_is          = tag_in_seg["seg_lv4"];
-  comp_obj_block.tags.epub_segment_anchor_tag_is          = tag_in_seg["seg_lv1to4"];
-  comp_obj_block.text                                     = an_object["substantive"];
-  comp_obj_block.has.inline_notes_reg                     = substantive_obj_misc_tuple[sObj.notes_reg];
-  comp_obj_block.has.inline_notes_star                    = substantive_obj_misc_tuple[sObj.notes_star];
-  comp_obj_block.has.inline_links                         = substantive_obj_misc_tuple[sObj.links];
-  the_document_body_section                               ~= comp_obj_block;
-  tag_assoc                                               = an_object.inline_para_link_anchor(tag_in_seg, tag_assoc);
-  pith["block_is"]                                        = eN.blk_is.poem;
-  pith["block_state"]                                     = eN.blk_state.off;
-  pith["block_delim"]                                     = eN.blk_delim.off;
-  object_reset(an_object);
-  processing.remove("verse");
-  ++cntr;
-#+END_SRC
-
-****** make: block
-
-#+NAME: abs_functions_block_line_status_empty_block_block
-#+BEGIN_SRC d
-} else if (pith["block_is"] == eN.blk_is.block) {
-  obj_cite_digits = ocn_emit(pith["ocn"]);
-  an_object["bookindex_nugget"]
-    = ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-  bookindex_unordered_hashes
-    = bookindex_extract_hash.bookindex_nugget_hash(
-      an_object["bookindex_nugget"],
-      obj_cite_digits,
-      tag_in_seg
-    );
-  an_object["is"]                                         = "block";
-  auto comp_obj_location
-    = node_construct.node_location_emitter(
-      content_non_header,
-      tag_in_seg,
-      lev_anchor_tag,
-      tag_assoc,
-      obj_cite_digits,
-      cntr,
-      heading_ptr-1,
-      an_object["is"]
-    );
-  TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_obj_misc_tuple
-    = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, No._new_doc);
-  an_object["substantive"]                                = substantive_obj_misc_tuple[sObj.content];
-  // anchor_tag                                           = substantive_obj_misc_tuple[sObj.anchor_tag];
-  comp_obj_block                                          = comp_obj_block.init;
-  comp_obj_block.metainfo.is_of_part                      = "body";
-  comp_obj_block.metainfo.is_of_section                   = "body";
-  comp_obj_block.metainfo.is_of_type                      = "block";
-  comp_obj_block.metainfo.is_a                            = "block";
-  comp_obj_block.metainfo.ocn                             = obj_cite_digits.object_number;
-  comp_obj_block.metainfo.identifier                      = obj_cite_digits.identifier;
-  comp_obj_block.metainfo.object_number_off               = obj_cite_digits.off;
-  comp_obj_block.metainfo.o_n_book_index                  = obj_cite_digits.bkidx;
-  comp_obj_block.metainfo.object_number_type              = obj_cite_digit_type;
-  comp_obj_block.metainfo.lang                            = an_object["lang"];
-  comp_obj_block.metainfo.attrib                          = an_object["attrib"];
-  comp_obj_block.tags.html_segment_anchor_tag_is          = tag_in_seg["seg_lv4"];
-  comp_obj_block.tags.epub_segment_anchor_tag_is          = tag_in_seg["seg_lv1to4"];
-  comp_obj_block.text                                     = an_object["substantive"];
-  comp_obj_block.has.inline_notes_reg                     = substantive_obj_misc_tuple[sObj.notes_reg];
-  comp_obj_block.has.inline_notes_star                    = substantive_obj_misc_tuple[sObj.notes_star];
-  comp_obj_block.has.inline_links                         = substantive_obj_misc_tuple[sObj.links];
-  the_document_body_section                               ~= comp_obj_block;
-  pith["block_is"]                                        = eN.blk_is.block;
-  pith["block_state"]                                     = eN.blk_state.off;
-  pith["block_delim"]                                     = eN.blk_delim.off;
-  object_reset(an_object);
-  processing.remove("verse");
-  ++cntr;
-#+END_SRC
-
-****** make: poem
-
-#+NAME: abs_functions_block_line_status_empty_block_poem
-#+BEGIN_SRC d
-} else if (pith["block_is"] == eN.blk_is.poem) {
-  an_object["bookindex_nugget"]
-    = ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-  bookindex_unordered_hashes
-    = bookindex_extract_hash.bookindex_nugget_hash(
-      an_object["bookindex_nugget"],
-      obj_cite_digits,
-      tag_in_seg
-    );
-  an_object["is"]                                         = "verse";
-  auto comp_obj_location
-    = node_construct.node_location_emitter(
-      content_non_header,
-      tag_in_seg,
-      lev_anchor_tag,
-      tag_assoc,
-      obj_cite_digits,
-      cntr,
-      heading_ptr-1,
-      an_object["is"]
-    );
-  comp_obj_poem_ocn                                       = comp_obj_poem_ocn.init;
-  comp_obj_poem_ocn.metainfo.is_of_part                   = "body";
-  comp_obj_poem_ocn.metainfo.is_of_section                = "body";
-  comp_obj_poem_ocn.metainfo.is_of_type                   = "block";
-  comp_obj_poem_ocn.metainfo.is_a                         = "poem";
-  comp_obj_poem_ocn.metainfo.ocn                          = obj_cite_digits.object_number;
-  comp_obj_poem_ocn.metainfo.identifier                   = obj_cite_digits.identifier;
-  comp_obj_poem_ocn.metainfo.object_number_off            = obj_cite_digits.off;
-  comp_obj_poem_ocn.metainfo.o_n_book_index               = obj_cite_digits.bkidx;
-  comp_obj_poem_ocn.metainfo.object_number_type           = obj_cite_digits.type;
-  comp_obj_poem_ocn.text                                  = "";
-  the_document_body_section                               ~= comp_obj_poem_ocn;
-  pith["block_is"]                                        = eN.blk_is.poem;
-  pith["block_state"]                                     = eN.blk_state.off;
-  pith["block_delim"]                                     = eN.blk_delim.off;
-  object_reset(an_object);
-  processing.remove("verse");
-#+END_SRC
-
-****** make: code block
-
-#+NAME: abs_functions_block_line_status_empty_block_code
-#+BEGIN_SRC d
-} else if (pith["block_is"] == eN.blk_is.code) {
-  obj_cite_digits = ocn_emit(pith["ocn"]);
-  an_object["bookindex_nugget"]
-    = ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-  bookindex_unordered_hashes
-    = bookindex_extract_hash.bookindex_nugget_hash(
-      an_object["bookindex_nugget"],
-      obj_cite_digits,
-      tag_in_seg
-    );
-  an_object["is"]                                         = "code";
-  auto comp_obj_location
-    = node_construct.node_location_emitter(
-      content_non_header,
-      tag_in_seg,
-      lev_anchor_tag,
-      tag_assoc,
-      obj_cite_digits,
-      cntr,
-      heading_ptr-1,
-      an_object["is"]
-    );
-  TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_obj_misc_tuple
-    = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, No._new_doc);
-  an_object["substantive"]                                = substantive_obj_misc_tuple[sObj.content];
-  anchor_tag                                              = substantive_obj_misc_tuple[sObj.anchor_tag];
-  comp_obj_code                                           = comp_obj_code.init;
-  comp_obj_code.metainfo.is_of_part                       = "body";
-  comp_obj_code.metainfo.is_of_section                    = "body";
-  comp_obj_code.metainfo.is_of_type                       = "block";
-  comp_obj_code.metainfo.is_a                             = "code";
-  comp_obj_code.metainfo.ocn                              = obj_cite_digits.object_number;
-  comp_obj_code.metainfo.identifier                       = obj_cite_digits.identifier;
-  comp_obj_code.metainfo.object_number_off                = obj_cite_digits.off;
-  comp_obj_code.metainfo.o_n_book_index                   = obj_cite_digits.bkidx;
-  comp_obj_code.metainfo.object_number_type               = obj_cite_digits.type;
-  comp_obj_code.metainfo.syntax                           = an_object["syntax"];
-  comp_obj_code.metainfo.attrib                           = an_object["attrib"];
-  comp_obj_code.code_block.linenumbers                    = (an_object["attrib"].match(rgx.code_numbering)) ? true : false;
-  comp_obj_code.tags.html_segment_anchor_tag_is           = tag_in_seg["seg_lv4"];
-  comp_obj_code.tags.epub_segment_anchor_tag_is           = tag_in_seg["seg_lv1to4"];
-  comp_obj_code.text                                      = an_object["substantive"];
-  comp_obj_code.has.inline_notes_reg                      = substantive_obj_misc_tuple[sObj.notes_reg];
-  comp_obj_code.has.inline_notes_star                     = substantive_obj_misc_tuple[sObj.notes_star];
-  comp_obj_code.has.inline_links                          = substantive_obj_misc_tuple[sObj.links];
-  the_document_body_section                               ~= comp_obj_code;
-  pith["block_is"]                                        = eN.blk_is.code;
-  pith["block_state"]                                     = eN.blk_state.off;
-  pith["block_delim"]                                     = eN.blk_delim.off;
-  object_reset(an_object);
-  processing.remove("verse");
-  ++cntr;
-#+END_SRC
-
-****** make: table
-
-#+NAME: abs_functions_block_line_status_empty_block_table
-#+BEGIN_SRC d
-} else if (pith["block_is"]    == eN.blk_is.table) {
-  comp_obj_block = comp_obj_block.init;
-  obj_cite_digits = ocn_emit(pith["ocn"]);
-  an_object["bookindex_nugget"]
-    = ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-  bookindex_unordered_hashes
-    = bookindex_extract_hash.bookindex_nugget_hash(
-      an_object["bookindex_nugget"],
-      obj_cite_digits,
-      tag_in_seg
-    );
-  an_object["is"]                                         = "table";
-  auto comp_obj_location
-    = node_construct.node_location_emitter(
-      content_non_header,
-      tag_in_seg,
-      lev_anchor_tag,
-      tag_assoc,
-      obj_cite_digits,
-      cntr,
-      heading_ptr-1,
-      an_object["is"]
-    );
-  TxtAndAnchorTagPlusHasFootnotesUrlsImages substantive_obj_misc_tuple
-    = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, No._new_doc);
-  an_object["substantive"]                                = substantive_obj_misc_tuple[sObj.content];
-  comp_obj_block                                          = comp_obj_block.init;
-  comp_obj_block.metainfo.ocn                             = obj_cite_digits.object_number;
-  comp_obj_block.metainfo.identifier                      = obj_cite_digits.identifier;
-  comp_obj_block.metainfo.object_number_off               = obj_cite_digits.off;
-  comp_obj_block.tags.html_segment_anchor_tag_is          = tag_in_seg["seg_lv4"];
-  comp_obj_block.tags.epub_segment_anchor_tag_is          = tag_in_seg["seg_lv1to4"];
-  comp_obj_block.metainfo.o_n_book_index                  = obj_cite_digits.bkidx;
-  comp_obj_block.metainfo.object_number_type              = obj_cite_digits.type;
-  comp_obj_block                                          = comp_obj_block.flow_table_instructions(an_object["table_head"]);
-  comp_obj_block                                          = comp_obj_block.flow_table_substantive_munge(an_object["substantive"]);
-  the_document_body_section                               ~= comp_obj_block;
-  pith["block_is"]                                        = eN.blk_is.table;
-  pith["block_state"]                                     = eN.blk_state.off;
-  pith["block_delim"]                                     = eN.blk_delim.off;
-  object_reset(an_object);
-  processing.remove("verse");
-  ++cntr;
-}
-#+END_SRC
-
-***** }
-
-#+NAME: abs_functions_block_line_status_empty_block_close_function_close
-#+BEGIN_SRC d
-  }
-  return an_object;
-}
-#+END_SRC
-
-*** book index :bookindex:
-
-#+NAME: abs_functions_book_index
-#+BEGIN_SRC d
-@system string[string] flow_book_index_(B)(
-             char[]          line,
-             string[string]  an_object,
-  return ref string          book_idx_tmp,
-  return ref uint[string]    pith,
-             B               opt_action,
-) {
-  static auto rgx = RgxI();
-  if (auto m = line.match(rgx.book_index_item)) {                                   /+ match book_index +/
-    debug(bookindexmatch) {
-      writefln(
-        "* [bookindex] %s\n",
-        m["bookindex"].to!string,
-      );
-    }
-    an_object["bookindex_nugget"] = m.captures[1].to!string;
-  } else if (auto m = line.match(rgx.book_index_item_open))  {                      /+ match open book_index +/
-    pith["section"] = eN.sect.book_index;
-    if (opt_action.backmatter && opt_action.section_bookindex) {
-      book_idx_tmp = m.captures[1].to!string;
-      debug(bookindexmatch) {
-        writefln(
-          "* [bookindex] %s\n",
-          book_idx_tmp,
-        );
-      }
-    }
-  } else if (pith["section"] == eN.sect.book_index)  {                    /+ book_index flag set +/
-    if (auto m = line.match(rgx.book_index_item_close))  {
-      pith["section"] = eN.sect.unset;
-      if (opt_action.backmatter
-      && opt_action.section_bookindex) {
-        an_object["bookindex_nugget"] = book_idx_tmp ~ m.captures[1].to!string;
-        debug(bookindexmatch) {
-          writefln(
-            "* [bookindex] %s\n",
-            book_idx_tmp,
-          );
-        }
-      }
-      book_idx_tmp = "";
-    } else {
-      if (opt_action.backmatter
-      && opt_action.section_bookindex) {
-        book_idx_tmp ~= line;
-      }
-    }
-  }
-  return an_object;
-}
-#+END_SRC
-
-*** heading or paragraph :heading:paragraph:
-**** heading found :heading:
-
-#+NAME: abs_functions_heading_found
-#+BEGIN_SRC d
-@safe string[string] flow_heading_found_()(
-             char[]                line,
-             string[string]        heading_match_str,
-             string[]              _make_unmarked_headings,
-  return ref Regex!(char)[string]  heading_match_rgx,
-  return ref uint[string]          pith,
-) {
-  static auto rgx = RgxI();
-  if ((_make_unmarked_headings.length > 2)
-  && (pith["make_headings"] == eN.bi.off)) {                        /+ headings found +/
-    debug(headingsfound) {
-      writeln(_make_unmarked_headings);
-    }
-    debug(headingsfound) {
-      writeln(_make_unmarked_headings.length);
-      writeln(_make_unmarked_headings);
-    }
-    switch (_make_unmarked_headings.length) {
-    case 7 :
-      if (!empty(_make_unmarked_headings[6])) {
-        heading_match_str["h_4"]
-          = "^(" ~ _make_unmarked_headings[6].to!string ~ ")";
-        heading_match_rgx["h_4"]
-          = regex(heading_match_str["h_4"]);
-      }
-      goto case;
-    case 6 :
-      if (!empty(_make_unmarked_headings[5])) {
-        heading_match_str["h_3"]
-          = "^(" ~ _make_unmarked_headings[5].to!string ~ ")";
-        heading_match_rgx["h_3"]
-          = regex(heading_match_str["h_3"]);
-      }
-      goto case;
-    case 5 :
-      if (!empty(_make_unmarked_headings[4])) {
-        heading_match_str["h_2"]
-          = "^(" ~ _make_unmarked_headings[4].to!string ~ ")";
-        heading_match_rgx["h_2"]
-          = regex(heading_match_str["h_2"]);
-      }
-      goto case;
-    case 4 :
-      if (!empty(_make_unmarked_headings[3])) {
-        heading_match_str["h_1"]
-          = "^(" ~ _make_unmarked_headings[3].to!string ~ ")";
-        heading_match_rgx["h_1"]
-          = regex(heading_match_str["h_1"]);
-      }
-      goto case;
-    case 3 :
-      if (!empty(_make_unmarked_headings[2])) {
-        heading_match_str["h_D"]
-          = "^(" ~ _make_unmarked_headings[2].to!string ~ ")";
-        heading_match_rgx["h_D"]
-          = regex(heading_match_str["h_D"]);
-      }
-      goto case;
-    case 2 :
-      if (!empty(_make_unmarked_headings[1])) {
-        heading_match_str["h_C"]
-          = "^(" ~ _make_unmarked_headings[1].to!string ~ ")";
-        heading_match_rgx["h_C"]
-          = regex(heading_match_str["h_C"]);
-      }
-      goto case;
-    case 1 :
-      if (!empty(_make_unmarked_headings[0])) {
-        heading_match_str["h_B"]
-          = "^(" ~ _make_unmarked_headings[0].to!string ~ ")";
-        heading_match_rgx["h_B"]
-          = regex(heading_match_str["h_B"]);
-      }
-      break;
-    default:
-      break;
-    }
-    pith["make_headings"] = eN.bi.on;
-  }
-  return heading_match_str;
-}
-#+END_SRC
-
-**** heading make set :heading:
-
-#+NAME: abs_functions_heading_make_set
-#+BEGIN_SRC d
-@safe char[] flow_heading_make_set_()(
-             char[]                line,
-             int[string]           line_occur,
-  return ref Regex!(char)[string]  heading_match_rgx,
-  return ref uint[string]          pith,
-) {
-  if (pith["make_headings"] == eN.bi.on
-    && (line_occur["para"] == eN.bi.off
-    && line_occur["heading"] == eN.bi.off)
-    && pith["txt_is"] == eN.txt_is.off
-  ) {                             /+ heading make set +/
-    if (line.matchFirst(heading_match_rgx["h_B"])) {
-      line = "B~ " ~ line;
-      debug(headingsfound) {
-        writeln(line);
-      }
-    }
-    if (line.matchFirst(heading_match_rgx["h_C"])) {
-      line = "C~ " ~ line;
-      debug(headingsfound) {
-        writeln(line);
-      }
-    }
-    if (line.matchFirst(heading_match_rgx["h_D"])) {
-      line = "D~ " ~ line;
-      debug(headingsfound) {
-        writeln(line);
-      }
-    }
-    if (line.matchFirst(heading_match_rgx["h_1"])) {
-      line = "1~ " ~ line;
-      debug(headingsfound) {
-        writeln(line);
-      }
-    }
-    if (line.matchFirst(heading_match_rgx["h_2"])) {
-      line = "2~ " ~ line;
-      debug(headingsfound) {
-        writeln(line);
-      }
-    }
-    if (line.matchFirst(heading_match_rgx["h_3"])) {
-      line = "3~ " ~ line;
-      debug(headingsfound) {
-        writeln(line);
-      }
-    }
-    if (line.matchFirst(heading_match_rgx["h_4"])) {
-      line = "4~ " ~ line;
-      debug(headingsfound) {
-        writeln(line);
-      }
-    }
-  }
-  return line;
-}
-#+END_SRC
-
-**** heading match :heading:
-
-#+NAME: abs_functions_heading_matched
-#+BEGIN_SRC d
-@safe string[string] flow_heading_matched_(CMM)(
-             char[]          line,
-             string[string]  an_object,
-  return ref int[string]     line_occur,
-  return ref string          an_object_key,
-  return ref int[string]     lv,
-  return ref int[string]     collapsed_lev,
-  return ref uint[string]    pith,
-  return ref CMM             conf_make_meta,
-) {
-  static auto rgx = RgxI();
-  static auto mkup = InlineMarkup();
-  if (auto m = line.match(rgx.headings)) {                                      /+ heading match +/
-    ++line_occur["heading"];
-    pith["txt_is"]           = eN.txt_is.heading;
-    if (line.match(rgx.heading_seg_and_above)) {
-      pith["section"]        = eN.sect.unset;
-    }
-    an_object[an_object_key] ~= line ~= "\n";
-    an_object["lev"] ~= m.captures[1];
-    assertions_doc_structure(an_object, lv); // includes most of the logic for collapsed levels
-    switch (an_object["lev"]) {
-    case "A":                                // Title set
-      if ((an_object[an_object_key].match(rgx.variable_doc_title_author_date))
-      || (an_object[an_object_key].match(rgx.variable_doc_title)
-      && an_object[an_object_key].match(rgx.variable_doc_author)
-      && an_object[an_object_key].match(rgx.variable_doc_date))) {
-        an_object[an_object_key] = an_object[an_object_key]
-          .replaceFirst(rgx.variable_doc_title_author_date,
-            (conf_make_meta.meta.title_full
-            ~ mkup.br_line_inline
-            ~ conf_make_meta.meta.creator_author
-            ~ " (" ~ (conf_make_meta.meta.date_published.replaceFirst(regex(r"(?:-00)+"),"")) ~ ")"))
-          .replaceFirst(rgx.variable_doc_title,
-            (conf_make_meta.meta.title_full ~ mkup.br_line_inline))
-          .replaceFirst(rgx.variable_doc_author,
-            conf_make_meta.meta.creator_author)
-          .replaceFirst(rgx.variable_doc_date,
-            " (" ~ (conf_make_meta.meta.date_published.replaceFirst(regex(r"(?:-00)+"),"")) ~ ")");
-      } else if ((an_object[an_object_key].match(rgx.variable_doc_title_author))
-      || (an_object[an_object_key].match(rgx.variable_doc_title)
-      && an_object[an_object_key].match(rgx.variable_doc_author))) {
-        an_object[an_object_key] = an_object[an_object_key]
-          .replaceFirst(rgx.variable_doc_title_author_date,
-            (conf_make_meta.meta.title_full
-            ~ mkup.br_line_inline
-            ~ conf_make_meta.meta.creator_author))
-          .replaceFirst(rgx.variable_doc_title,
-            (conf_make_meta.meta.title_full ~ mkup.br_line_inline))
-          .replaceFirst(rgx.variable_doc_author,
-            conf_make_meta.meta.creator_author);
-      } else if (an_object[an_object_key].match(rgx.variable_doc_title)) {
-        an_object[an_object_key] = an_object[an_object_key]
-          .replaceFirst(rgx.variable_doc_title,
-            conf_make_meta.meta.title_full);
-      }
-      collapsed_lev["h0"] = 0;
-      an_object["lev_collapsed_number"]
-        = collapsed_lev["h0"].to!string;
-      lv["lv"] = DocStructMarkupHeading.h_sect_A;
-      ++lv["h0"];
-      lv["h1"] = eN.bi.off;
-      lv["h2"] = eN.bi.off;
-      lv["h3"] = eN.bi.off;
-      lv["h4"] = eN.bi.off;
-      lv["h5"] = eN.bi.off;
-      lv["h6"] = eN.bi.off;
-      lv["h7"] = eN.bi.off;
-      goto default;
-    case "B":
-      collapsed_lev["h1"] = collapsed_lev["h0"] + 1;
-      an_object["lev_collapsed_number"]
-        = collapsed_lev["h1"].to!string;
-      lv["lv"] = DocStructMarkupHeading.h_sect_B;
-      ++lv["h1"];
-      lv["h2"] = eN.bi.off;
-      lv["h3"] = eN.bi.off;
-      lv["h4"] = eN.bi.off;
-      lv["h5"] = eN.bi.off;
-      lv["h6"] = eN.bi.off;
-      lv["h7"] = eN.bi.off;
-      goto default;
-    case "C":
-      collapsed_lev["h2"] = collapsed_lev["h1"] + 1;
-      an_object["lev_collapsed_number"]
-        = collapsed_lev["h2"].to!string;
-      lv["lv"] = DocStructMarkupHeading.h_sect_C;
-      ++lv["h2"];
-      lv["h3"] = eN.bi.off;
-      lv["h4"] = eN.bi.off;
-      lv["h5"] = eN.bi.off;
-      lv["h6"] = eN.bi.off;
-      lv["h7"] = eN.bi.off;
-      goto default;
-    case "D":
-      collapsed_lev["h3"] = collapsed_lev["h2"] + 1;
-      an_object["lev_collapsed_number"]
-        = collapsed_lev["h3"].to!string;
-      lv["lv"] = DocStructMarkupHeading.h_sect_D;
-      ++lv["h3"];
-      lv["h4"] = eN.bi.off;
-      lv["h5"] = eN.bi.off;
-      lv["h6"] = eN.bi.off;
-      lv["h7"] = eN.bi.off;
-      goto default;
-    case "1":
-      if (lv["h3"] > eN.bi.off) {
-        collapsed_lev["h4"] = collapsed_lev["h3"] + 1;
-      } else if (lv["h2"] > eN.bi.off) {
-        collapsed_lev["h4"] = collapsed_lev["h2"] + 1;
-      } else if (lv["h1"] > eN.bi.off) {
-        collapsed_lev["h4"] = collapsed_lev["h1"] + 1;
-      } else if (lv["h0"] > eN.bi.off) {
-        collapsed_lev["h4"] = collapsed_lev["h0"] + 1;
-      }
-      an_object["lev_collapsed_number"]
-        = collapsed_lev["h4"].to!string;
-      lv["lv"] = DocStructMarkupHeading.h_text_1;
-      ++lv["h4"];
-      lv["h5"] = eN.bi.off;
-      lv["h6"] = eN.bi.off;
-      lv["h7"] = eN.bi.off;
-      goto default;
-    case "2":
-      if (lv["h5"] > eN.bi.off) {
-        an_object["lev_collapsed_number"]
-          = collapsed_lev["h5"].to!string;
-      } else if (lv["h4"] > eN.bi.off) {
-        collapsed_lev["h5"] = collapsed_lev["h4"] + 1;
-        an_object["lev_collapsed_number"]
-          = collapsed_lev["h5"].to!string;
-      }
-      lv["lv"] = DocStructMarkupHeading.h_text_2;
-      ++lv["h5"];
-      lv["h6"] = eN.bi.off;
-      lv["h7"] = eN.bi.off;
-      goto default;
-    case "3":
-      if (lv["h6"] > eN.bi.off) {
-        an_object["lev_collapsed_number"]
-          = collapsed_lev["h6"].to!string;
-      } else if (lv["h5"] > eN.bi.off) {
-        collapsed_lev["h6"] = collapsed_lev["h5"] + 1;
-        an_object["lev_collapsed_number"]
-          = collapsed_lev["h6"].to!string;
-      }
-      lv["lv"] = DocStructMarkupHeading.h_text_3;
-      ++lv["h6"];
-      lv["h7"] = eN.bi.off;
-      goto default;
-    case "4":
-      if (lv["h7"] > eN.bi.off) {
-        an_object["lev_collapsed_number"]
-          = collapsed_lev["h7"].to!string;
-      } else if (lv["h6"] > eN.bi.off) {
-        collapsed_lev["h7"] = collapsed_lev["h6"] + 1;
-        an_object["lev_collapsed_number"]
-          = collapsed_lev["h7"].to!string;
-      }
-      lv["lv"] = DocStructMarkupHeading.h_text_4;
-      ++lv["h7"];
-      goto default;
-    default:
-      an_object["lev_markup_number"] = lv["lv"].to!string;
-    }
-    an_object["dummy_heading_status"] = (pith["dummy_heading_status"] == eN.bi.off) ? "f" : "t";
-    debug(heading) {
-      writeln(line.strip);
-    }
-  }
-  return an_object;
-}
-#+END_SRC
-
-**** para match :para:
-
-#+NAME: abs_functions_para_matched
-#+BEGIN_SRC d
-@safe string[string] flow_para_match_()(
-             char[]         line,
-             string[string]  an_object,
-  return ref string          an_object_key,
-  return ref int[string]     indent,
-  return ref bool            bullet,
-  return ref uint[string]    pith,
-  return ref int[string]     line_occur,
-) {
-  static auto rgx = RgxI();
-  if (line_occur["para"] == eN.bi.off) {
-    line = font_faces_line(line);
-    /+ para matches +/
-    pith["txt_is"]           = eN.txt_is.para;
-    an_object[an_object_key] ~= line;
-    indent = [
-      "hang_position" : 0,
-      "base_position" : 0,
-    ];
-    bullet = false;
-    if (auto m = line.matchFirst(rgx.para_indent)) {
-      debug(paraindent) {
-        writeln(line);
-      }
-      indent["hang_position"] = (m["indent"]).to!int;
-      indent["base_position"] = (m["indent"]).to!int;
-    } else if (line.matchFirst(rgx.para_bullet)) {
-      debug(parabullet) {
-        writeln(line);
-      }
-      bullet = true;
-    } else if (auto m = line.matchFirst(rgx.para_indent_hang)) {
-      debug(paraindenthang) {
-        writeln(line);
-      }
-      indent = [
-        "hang_position" : (m["hang"]).to!int,
-        "base_position" : (m["indent"]).to!int,
-      ];
-    } else if (auto m = line.matchFirst(rgx.para_bullet_indent)) {
-      debug(parabulletindent) {
-        writeln(line);
-      }
-      indent = [
-        "hang_position" : (m["indent"]).to!int,
-        "base_position" : (m["indent"]).to!int,
-      ];
-      bullet = true;
-    }
-    ++line_occur["para"];
-  }
-  return an_object;
-}
-#+END_SRC
-
-**** text font face
-
-#+NAME: abs_functions_para_font_faces_line
-#+BEGIN_SRC d
-@safe char[] font_faces_line()(
-  char[]  textline,
-) {
-  static auto rgx = RgxI();
-  static auto mkup = InlineMarkup();
-  if (textline.match(rgx.inline_faces_line)) {
-    textline = textline
-      .replaceFirst(rgx.inline_emphasis_line,
-        format(q"┃%s%s%s%s%s%s%s┃",
-          "⑆", mkup.emph, mkup.ff_o, "$1", mkup.ff_c, mkup.emph, "$2"))
-      .replaceFirst(rgx.inline_bold_line,
-        format(q"┃%s%s%s%s%s%s%s┃",
-          "⑆", mkup.bold, mkup.ff_o, "$1", mkup.ff_c, mkup.bold, "$2"))
-      .replaceFirst(rgx.inline_underscore_line,
-        format(q"┃%s%s%s%s%s%s%s┃",
-          "⑆", mkup.underscore, mkup.ff_o, "$1", mkup.ff_c, mkup.underscore, "$2"))
-      .replaceFirst(rgx.inline_italics_line,
-        format(q"┃%s%s%s%s%s%s%s┃",
-          "⑆", mkup.italic,  mkup.ff_o, "$1", mkup.ff_c, mkup.italic, "$2"));
-  }
-  return textline;
-}
-#+END_SRC
-
-**** tables
-
-- number of columns
-- column widths (either as given or uniform, first often different from rest)
-- column aligns (as given else default left for text, check whether can default right for digits)
-- table heading (auto align left)
-- table walls
-- TODO need to be able to align columns left or right (digits)
-
-***** table instructions
-
-#+NAME: abs_functions_table_instructions
-#+BEGIN_SRC d
-@safe ObjGenericComposite flow_table_instructions(H)(
-  return ref ObjGenericComposite  table_object,
-             H                    table_head,
-) {
-  static auto rgx = RgxI();
-  table_object.metainfo.is_of_part        = "body";
-  table_object.metainfo.is_of_section     = "body";
-  table_object.metainfo.is_of_type        = "block";
-  table_object.metainfo.is_a              = "table";
-  table_object.has.inline_notes_reg       = false;
-  table_object.has.inline_notes_star      = false;
-  table_object.has.inline_links           = false;
-  if (auto m = table_head.matchFirst(rgx.table_head_instructions)) {
-    table_object.table.heading
-      = ((m["c_heading"].length > 0) && (m["c_heading"] == "h")) ? true : false;
-    table_object.table.number_of_columns
-      = ((m["c_num"].length > 0) && (m["c_num"].to!int > 0)) ? m["c_num"].to!int : 0;
-    foreach (cw; m["c_widths"].matchAll(rgx.table_col_widths)) {
-      auto x = cw.hit.matchFirst(rgx.table_col_widths_and_alignment);
-      table_object.table.column_widths ~= x["width"].to!int;
-      table_object.table.column_aligns ~= (x["align"].empty) ? "" : x["align"];
-    }
-  }
-  return table_object;
-}
-#+END_SRC
-
-***** table array munge
-
-#+NAME: abs_functions_table_munge_array
-#+BEGIN_SRC d
-@safe ObjGenericComposite flow_table_array_munge(T)(
-  return ref ObjGenericComposite  table_object,
-  return ref T                    table_array,
-) {
-  static auto rgx = RgxI();
-  static auto mng = InlineMarkup();
-  string _table_substantive;
-  ulong col_num;
-  ulong col_num_;
-  ulong col_num_chk = 0;
-  foreach(idx_r, row; table_array) {
-    debug(table_dev) {
-      writeln("row ", idx_r);
-    }
-    col_num_ = 0;
-    if (col_num == 0
-    || col_num < row.length) {
-      col_num = row.length;
-    }
-    if (col_num_chk == 0) {
-      col_num_chk = col_num;
-    } else if (col_num == 1) {
-      debug(table_dev) {
-        writeln("table note: ");
-      }
-    } else if (col_num_chk != col_num) {
-      debug(table_dev) {
-        writeln("warning irregular number of columns: ", col_num_chk, " != ", col_num);
-      }
-    } else {
-    }
-    foreach(idx_c, col; row) {
-      debug(table_dev) {
-        write(idx_c, ", ");
-      }
-      col_num_ = idx_c;
-      _table_substantive ~= col ~ mng.tc_s;
-      if (idx_r == 0 && comp_obj_block.table.heading) {
-      } else if (col.match(rgx.numeric_col) && idx_r == 1) { // conditions reversed to avoid: gdc compiled program run segfault
-        if ((comp_obj_block.table.column_aligns.length > idx_c)
-        && (comp_obj_block.table.column_aligns[idx_c].matchFirst(rgx.table_col_align_match))) {
-          comp_obj_block.table.column_aligns[idx_c]
-            = comp_obj_block.table.column_aligns[idx_c];
-        } else if (comp_obj_block.table.column_aligns.length > idx_c) {
-          comp_obj_block.table.column_aligns[idx_c] = "r";
-        } else {
-          comp_obj_block.table.column_aligns ~= "r";
-        }
-      } else if (idx_r == 1) {
-        if ((comp_obj_block.table.column_aligns.length > idx_c)
-        && (comp_obj_block.table.column_aligns[idx_c].matchFirst(rgx.table_col_align_match))) {
-          comp_obj_block.table.column_aligns[idx_c]
-            = comp_obj_block.table.column_aligns[idx_c];
-        } else if (comp_obj_block.table.column_aligns.length > idx_c) {
-          comp_obj_block.table.column_aligns[idx_c] = "l";
-        } else {
-          comp_obj_block.table.column_aligns ~= "l";
-        }
-      }
-    }
-    debug(table_dev) {
-      writeln("");
-    }
-    if (col_num_chk > 0 && (col_num != col_num_chk)) {
-    } else if (col_num == col_num_chk){
-    } else {
-      col_num_chk = col_num;
-    }
-    _table_substantive = _table_substantive.replaceFirst(rgx.table_col_separator_nl, "\n");
-  }
-  if (comp_obj_block.table.number_of_columns != col_num) {
-    if (comp_obj_block.table.number_of_columns == 0) {
-      comp_obj_block.table.number_of_columns = (col_num).to!int;
-    } else {
-      debug(table_dev) {
-        writeln(comp_obj_block.table.number_of_columns, " != ", col_num);
-      }
-    }
-  }
-  if (table_object.table.number_of_columns == 0
-  && table_object.table.column_widths.length > 0) {
-    writeln(__LINE__, " ERROR");
-  }
-  if (table_object.table.number_of_columns > 0
-  && table_object.table.column_widths.length == 0) {
-    double col_w = (100.00 / table_object.table.number_of_columns);
-    foreach (i; 0..table_object.table.number_of_columns) {
-      table_object.table.column_widths ~= col_w;
-    }
-  } else if (table_object.table.number_of_columns
-  != table_object.table.column_widths.length) {
-    debug(table_dev) {
-      writeln(m.hit); // further logic required
-    }
-    if (table_object.table.number_of_columns > table_object.table.column_widths.length) {
-      double col_w = (100.00 - (table_object.table.column_widths).sum)
-        / (table_object.table.number_of_columns - table_object.table.column_widths.length);
-      foreach (i; 0..table_object.table.column_widths.length) {
-        table_object.table.column_widths ~= col_w;
-      }
-      foreach (i; 0..(table_object.table.number_of_columns - table_object.table.column_widths.length)) {
-        table_object.table.column_widths ~= col_w;
-      }
-    } else if (table_object.table.number_of_columns < table_object.table.column_widths.length) {
-      writeln(__LINE__, " warning, ERROR");
-    }
-  }
-  if (table_object.table.column_widths.sum > 101
-  || table_object.table.column_widths.sum < 95 ) {
-    writeln("sum: ", table_object.table.column_widths.sum,
-      ", array: ", table_object.table.column_widths,
-      ", cols: ", table_object.table.number_of_columns);
-    writeln(_table_substantive);
-  }
-  debug(table_res) {
-    writeln("aligns: ", comp_obj_block.table.column_aligns, "\n",
-      "no. of columns: ", comp_obj_block.table.number_of_columns, "\n",
-      "col widths: ", comp_obj_block.table.column_widths,
-        " sum: ", comp_obj_block.table.column_widths.sum, "\n",
-      _table_substantive);
-  }
-  comp_obj_block.text = _table_substantive;
-  return table_object;
-}
-#+END_SRC
-
-***** table substantive munge
-
-#+NAME: abs_functions_table_munge_substantive
-#+BEGIN_SRC d
-@system ObjGenericComposite flow_table_substantive_munge(T)(
-  return ref ObjGenericComposite  table_object,
-  return ref T                    table_substantive,
-) {
-  static auto rgx = RgxI();
-  static auto munge = ObjInlineMarkupMunge();
-  string[] _table_rows = (table_substantive).split(rgx.table_row_delimiter);
-  string[] _table_cols;
-  string[][] _table;
-  foreach(col; _table_rows) {
-    _table_cols = col.split(rgx.table_col_delimiter);
-    _table ~= _table_cols;
-  }
-  table_object = table_object.flow_table_array_munge(_table);
-  return table_object;
-}
-#+END_SRC
-
-***** table substantive munge special
-
-#+NAME: abs_functions_table_munge_substantive_special
-#+BEGIN_SRC d
-@system ObjGenericComposite flow_table_substantive_munge_special(T)(
-  return ref ObjGenericComposite  table_object,
-  return ref T                    table_substantive,
-) {
-  static auto rgx = RgxI();
-  static auto munge = ObjInlineMarkupMunge();
-  string[] _table_rows = (table_substantive).split(rgx.table_row_delimiter_special);
-  string[] _table_cols;
-  string[][] _table;
-  foreach(col; _table_rows) {
-    _table_cols = col.split(rgx.table_col_delimiter_special);
-    _table ~= _table_cols;
-  }
-  table_object = table_object.flow_table_array_munge(_table);
-  return table_object;
-}
-#+END_SRC
-
-*** function emitters :emitters:
-**** object :object:
-***** ocn :ocn:
-
-#+NAME: meta_emitters_ocn
-#+BEGIN_SRC d
-@safe pure struct OCNemitter {
-  int ocn_digit, ocn_object_number, ocn_on_, ocn_off_, ocn_bkidx, ocn_bkidx_;
-  string object_identifier;
-  bool ocn_is_off;
-  @safe auto ocn_emitter(int ocn_status_flag) {
-    OCNset ocn;
-    assert(ocn_status_flag <= eN.ocn.reset);
-    ocn_object_number              = ocn_bkidx = 0;
-    object_identifier              = "";
-    ocn_is_off                     = false;
-    switch(ocn_status_flag) with (eN.ocn) {
-    case reset:
-      ocn_digit                    = ocn_on_             = 1;
-      object_identifier            = "1";
-      ocn_is_off                   = false;
-      ocn_off_                     = ocn_bkidx_ = 0;
-      break;
-    case on:
-      ocn_digit                    = ocn_object_number   = ++ocn_on_;
-      object_identifier            = ocn_digit.to!string;
-      ocn_is_off                   = false;
-      break;
-    case off:
-      ocn_digit                    = 0;
-      ocn_off_                     = ++ocn_off_;
-      object_identifier            = "a" ~ ocn_off_.to!string;
-      ocn_is_off                   = true;
-      break;
-    case bkidx:
-      ocn_bkidx                    = ++ocn_bkidx_;
-      break;
-    case closing: // unused?
-      break;
-    default:
-      ocn_digit                    = 0;
-    }
-    assert(ocn_digit >= 0);
-    ocn.digit                      = ocn_digit;
-    ocn.object_number              = ocn_object_number; // difference between .object_number and .digit?
-    ocn.identifier                 = object_identifier;
-    ocn.off                        = ocn_is_off;
-    ocn.bkidx                      = ocn_bkidx;
-    ocn.type                       = ocn_status_flag;
-    return ocn;
-  }
-  invariant() {
-  }
-}
-#+END_SRC
-
-***** object inline markup munge :markup:inline:
-****** { struct, inline markup munge
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_open
-#+BEGIN_SRC d
-@safe static struct ObjInlineMarkupMunge {
-  string[string] obj_txt;
-  int n_foot, n_foot_reg, n_foot_sp_asterisk, n_foot_sp_plus;
-  string asterisks_, plus_;
-  string obj_txt_out, tail, note;
-  static auto rgx = RgxI();
-  static auto mkup = InlineMarkup();
-  int stage_reset_note_numbers = true;
-  private auto initialize_note_numbers() {
-    n_foot                          = 0;
-    n_foot_reg                      = 0;
-    n_foot_sp_asterisk              = 0;
-    n_foot_sp_plus                  = 0;
-  }
-#+END_SRC
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_markup_images
-#+BEGIN_SRC d
-@safe static auto images()(string obj_txt_in) {
-  static auto mng = InlineMarkup();
-  /+ url matched +/
-  obj_txt_in = obj_txt_in.replaceAll(rgx.inline_notes_al_special, ""); // TODO reinstate when special footnotes are implemented
-  if (obj_txt_in.match(rgx.smid_image_generic)) {                            /+ images with and without links +/
-    debug(images) {
-      writeln("Image: ", obj_txt_in);
-    }
-    if (obj_txt_in.match(rgx.smid_image_with_dimensions)) {
-      obj_txt_in = obj_txt_in
-        .replaceAll(rgx.smid_image_with_dimensions, ("$1" ~ mkup.img ~ "$2,w$3h$4 " ~ "$5"))
-        .replaceAll(rgx.smid_image_delimit, ("$1"
-          ~ mkup.lnk_o ~ "$2".strip ~ mkup.lnk_c
-          ~ mkup.url_o ~ mkup.url_c));
-      debug(images) {
-        writeln("IMAGE with size: ", obj_txt_in);
-      }
-    } else if (obj_txt_in.match(rgx.smid_image)) {
-      obj_txt_in = obj_txt_in
-        .replaceAll(rgx.smid_image, ("$1" ~ mkup.img ~ "$2,w0h0" ~ "$3"))
-        .replaceAll(rgx.smid_image_delimit, ("$1"
-          ~ mkup.lnk_o ~ "$2".strip ~ mkup.lnk_c
-          ~ mkup.url_o ~ mkup.url_c));
-      debug(images) {
-        writeln("IMAGE: ", obj_txt_in); // decide on representation
-      }
-    }
-  }
-  return obj_txt_in;
-}
-#+END_SRC
-
-******* footnotes endnotes markup
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_markup_footnotes_endnotes
-#+BEGIN_SRC d
-@safe TxtPlusHasFootnotes footnotes_endnotes_markup_and_number_or_stars()(string obj_txt_in, bool reset_note_numbers) {
-  /+ endnotes (regular) +/
-  bool flg_notes_reg  = false;
-  bool flg_notes_star = false;
-  bool flg_notes_plus = false;
-  obj_txt_in = obj_txt_in.replaceAll(
-    rgx.inline_notes_curly,
-    (mkup.en_a_o ~ " $1" ~ mkup.en_a_c)
-  );
-  if (!(stage_reset_note_numbers) && reset_note_numbers) {
-    stage_reset_note_numbers = true;
-  }
-  obj_txt_out = "";
-  if (obj_txt_in.match(rgx.inline_notes_al_gen)) {
-    string[] _tmp_txt;
-    foreach (x; obj_txt_in.split("\n")) {
-      if (auto m = x.matchAll(rgx.inline_text_and_note_al_)) {
-        if (stage_reset_note_numbers) {
-          n_foot                  = 0;
-          n_foot_reg              = 0;
-          n_foot_sp_asterisk      = 0;
-          n_foot_sp_plus          = 0;
-        }
-        stage_reset_note_numbers = false;
-        foreach(n; m) {
-          if (n.hit.to!string.match(rgx.inline_al_delimiter_open_symbol_star)) {
-            flg_notes_star =  true;
-            ++n_foot_sp_asterisk;
-            asterisks_ = "*";
-            n_foot = n_foot_sp_asterisk;
-            _tmp_txt ~= n.hit.to!string.replaceFirst(
-              rgx.inline_al_delimiter_open_symbol_star,
-              (mkup.en_a_o ~ replicate(asterisks_, n_foot_sp_asterisk) ~ " ")
-            );
-          } else if (n.hit.to!string.match(rgx.inline_al_delimiter_open_symbol_plus)) {
-            flg_notes_plus =  true;
-            ++n_foot_sp_plus;
-            plus_ = "*";
-            n_foot = n_foot_sp_plus;
-            _tmp_txt ~= n.hit.to!string.replaceFirst(
-              rgx.inline_al_delimiter_open_symbol_plus,
-              (mkup.en_a_o ~ replicate(plus_, n_foot_sp_plus) ~ " ")
-            );
-          } else if (n.hit.to!string.matchFirst(rgx.inline_al_delimiter_open_regular)) {
-            string _tmp_str = n.hit.to!string;
-            flg_notes_reg =  true;
-            foreach (q; n.hit.to!string.matchAll(rgx.inline_al_delimiter_open_regular)) {
-              ++n_foot_reg;
-              n_foot = n_foot_reg;
-              _tmp_str = replaceFirst!(m => mkup.en_a_o ~ n_foot.to!string ~ " ")
-                (_tmp_str, rgx.inline_al_delimiter_open_regular);
-            }
-            _tmp_txt ~= _tmp_str;
-          } else {
-            _tmp_txt ~= n.hit.to!string;
-          }
-        }
-        obj_txt_out = _tmp_txt.join("\n");
-      }
-    }
-  } else {
-    obj_txt_out = obj_txt_in;
-  }
-  TxtPlusHasFootnotes t = tuple(
-    obj_txt_out,
-    flg_notes_reg,
-    flg_notes_star,
-    flg_notes_plus,
-  );
-  return t;
-}
-#+END_SRC
-
-******* object notes and links
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_object_notes_and_links
-#+BEGIN_SRC d
-@safe private TxtPlusHasFootnotesUrlsImages object_notes_and_links_()(
-  string obj_txt_in,
-  bool reset_note_numbers = false
-) {
-  obj_txt_out = "";
-  bool urls = false;
-  bool images_without_dimensions = false;
-  tail = "";
-  /+ special endnotes +/
-  obj_txt_in = obj_txt_in.replaceAll(
-    rgx.inline_notes_curly_sp_asterisk,
-    (mkup.en_a_o ~ "*" ~ " $1" ~ mkup.en_a_c)
-  );
-  obj_txt_in
-    = obj_txt_in.replaceAll(
-      rgx.inline_notes_curly_sp_plus,
-      (mkup.en_a_o ~ "+" ~ " $1" ~ mkup.en_a_c)
-    );
-  /+ image matched +/
-  if (obj_txt_in.match(rgx.smid_image_generic)) {
-    obj_txt_in = images(obj_txt_in);
-    if (obj_txt_in.match(rgx.smid_mod_image_without_dimensions)) {
-      images_without_dimensions = true;
-    }
-  }
-  /+ url matched +/
-  if (obj_txt_in.match(rgx.smid_inline_url)) {
-    urls = true;
-    obj_txt_in = obj_txt_in.links_and_images;
-  }
-  if (auto m = obj_txt_in.match(rgx.para_inline_link_anchor)) {
-    obj_txt_in = obj_txt_in
-      .replaceAll(rgx.para_inline_link_anchor, "┃$1┃");
-  }
-  TxtPlusHasFootnotes ftn = footnotes_endnotes_markup_and_number_or_stars(obj_txt_in, reset_note_numbers);
-  obj_txt_out = ftn.obj_txt;
-  debug(footnotes) {
-    writeln(obj_txt_out, tail);
-  }
-  obj_txt_out = obj_txt_out ~ tail;
-  debug(footnotesdone) {
-    foreach(m; matchAll(obj_txt_out,
-    (mkup.en_a_o ~ `\s*(.+?)` ~ mkup.en_a_c))) {
-      writeln(m[1]);
-      writeln(m.hit);
-    }
-  }
-  TxtPlusHasFootnotesUrlsImages t = tuple(
-    obj_txt_out,
-    ftn.has_notes_reg,
-    ftn.has_notes_star,
-    ftn.has_notes_plus,
-    urls,
-    images_without_dimensions,
-  );
-  return t;
-}
-auto init() {
-  TxtPlusHasFootnotesUrlsImages t = object_notes_and_links_("");
-  return t;
-}
-invariant() {
-}
-#+END_SRC
-
-******* heading
-
-- identified text by heading level marker followed by text until two new lines
-- general markup subset
-  - attributes (heading)
-    - heading level
-  - inline markup
-    - font faces (bold, italics, underscore etc.)
-    - footnotes/endnotes
-    - links?
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_heading
-#+BEGIN_SRC d
-@safe auto munge_heading()(
-  string obj_txt_in,
-  bool reset_note_numbers = false
-) {
-  obj_txt["munge"] = obj_txt_in
-   .replaceFirst(rgx.headings, "")
-   .replaceFirst(rgx.object_number_off_all, "")
-   .replaceFirst(rgx.markup_inline_linebreak, mkup.br_line_inline)
-   .strip;
-  TxtPlusHasFootnotesUrlsImages t = object_notes_and_links_(obj_txt["munge"], reset_note_numbers);
-  debug(munge) {
-    writeln(__LINE__);
-    writeln(obj_txt_in);
-    writeln(__LINE__);
-    writeln(obj_txt["munge"].to!string);
-  }
-  return t;
-}
-invariant() {
-}
-#+END_SRC
-
-******* para
-
-- paragraph the default form of text, text without other identification until two new lines
-- general markup
-  - attributes (para)
-    - paragraph attributes (indent markup, bullet indent, etc.)
-  - inline markup
-    - font faces (bold, italics, underscore etc.)
-    - footnotes/endnotes
-    - links
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_para
-#+BEGIN_SRC d
-@safe auto munge_para()(string obj_txt_in) {
-  obj_txt["munge"] = (obj_txt_in)
-    .replaceFirst(rgx.para_attribs, "")
-    .replaceFirst(rgx.object_number_off_all, "")
-    .replaceFirst(rgx.markup_inline_linebreak, mkup.br_line_inline);
-  TxtPlusHasFootnotesUrlsImages t = object_notes_and_links_(obj_txt["munge"]);
-  debug(munge) {
-    writeln(__LINE__);
-    writeln(obj_txt_in);
-    writeln(__LINE__);
-    writeln(obj_txt["munge"].to!string);
-  }
-  return t;
-}
-#+END_SRC
-
-******* quote WORKON
-
-- quote block identified by open an close tags
-- general markup subset
-  - NO standard (para) attributes
-  - inline markup
-    - font faces (bold, italics, underscore etc.)
-    - footnotes/endnotes
-    - links
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_quote
-#+BEGIN_SRC d
-@safe auto munge_quote()(string obj_txt_in) {
-  TxtPlusHasFootnotesUrlsImages t = object_notes_and_links_(obj_txt_in.split("\n\n").join(" \\\\\n \\\\\n"));
-  // TxtPlusHasFootnotesUrlsImages t = object_notes_and_links_(obj_txt_in);
-  return t;
-}
-invariant() {
-}
-#+END_SRC
-
-******* group
-
-- group block identified by open an close tags
-- general markup
-  - NO standard (para) attributes
-  - inline markup
-    - (indent markup, bullet indent [usually para attributes]) kept as inline markup [not available as paragraph attributes, requires bespoke processing (for group text) downstream]
-    - font faces (bold, italics, underscore etc.)
-    - footnotes/endnotes
-    - links
-- drop spaces
-- keep newlines?
-  - drop linebreaks (single newlines),
-  - keep parabreaks (double newlines) apply paragraph attributes
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_group
-#+BEGIN_SRC d
-@safe auto munge_group(string obj_txt_in) {
-  TxtPlusHasFootnotesUrlsImages t = object_notes_and_links_(obj_txt_in.split("\n\n").join("\n" ~ mkup.br_line_spaced ~ "\n")); // br_line br_line_inline br_line_spaced
-  return t;
-}
-invariant() {
-}
-#+END_SRC
-
-******* block
-
-- group block identified by open an close tags
-- general markup subset
-  - NO standard (para) attributes
-  - inline markup
-    - font faces (bold, italics, underscore etc.)
-    - footnotes/endnotes
-    - links
-- keep newlines & spaces
-  - spaces
-  - newlines?
-    - newlines detected and kept?
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_block
-#+BEGIN_SRC d
-@safe auto munge_block()(string obj_txt_in) {
-  TxtPlusHasFootnotesUrlsImages t = object_notes_and_links_(obj_txt_in);
-  return t;
-}
-invariant() {
-}
-#+END_SRC
-
-******* verse (poem)
-
-- sub part of poem block which is identified by open an close tags, separated from other verse by double newline
-- keep newlines & spaces
-  - newlines
-  - indentation
-- what part of general markup?
-  - NO standard (para) attributes
-  - inline markup
-    - font faces (bold, italics, underscore etc.)
-    - footnotes/endnotes
-    - links?
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_verse
-#+BEGIN_SRC d
-@safe auto munge_verse()(string obj_txt_in) {
-  TxtPlusHasFootnotesUrlsImages t = object_notes_and_links_(obj_txt_in);
-  return t;
-}
-invariant() {
-}
-#+END_SRC
-
-******* code
-
-- NO general markup
-  - NO standard (para) attributes
-  - special attributes?
-    - possibly identify language object attribute for syntax for coloring
-    - numbered code blocks (markup/obj attribute?)
-- keep newlines & spaces
-  - newlines
-  - indentation
-- one special character represented by mkup.nbsp ░
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_code
-#+BEGIN_SRC d
-@safe string munge_code()(string obj_txt_in) {
-  obj_txt_in = obj_txt_in.replaceAll(rgx.space, mkup.nbsp);
-  obj_txt["munge"] = obj_txt_in;
-  return obj_txt["munge"];
-}
-invariant() {
-}
-#+END_SRC
-
-******* table
-
-- table block identified by open an close tags
-- table markup
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_table
-#+BEGIN_SRC d
-@safe string munge_table()(string obj_txt_in) {
-  obj_txt["munge"] = obj_txt_in;
-  return obj_txt["munge"];
-}
-invariant() {
-}
-#+END_SRC
-
-******* comment
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_comment
-#+BEGIN_SRC d
-@safe string munge_comment()(string obj_txt_in) {
-  obj_txt["munge"] = obj_txt_in;
-  return obj_txt["munge"];
-}
-invariant() {
-}
-#+END_SRC
-
-****** }
-
-#+NAME: meta_emitters_obj_inline_markup_munge_function_close
-#+BEGIN_SRC d
-}
-#+END_SRC
-
-***** toc, tags, object inline markup :markup:inline:
-****** {
-
-#+NAME: meta_emitters_obj_inline_markup_function_open
-#+BEGIN_SRC d
-static struct ObjInlineMarkup {
-  static auto rgx = RgxI();
-  static auto munge = ObjInlineMarkupMunge();
-  string[string] obj_txt;
-  string anchor_tag = "";
-#+END_SRC
-
-******* object inline markup and anchor tags :markup:inline:
-
-#+NAME: meta_emitters_obj_inline_markup_and_anchor_tags_and_misc
-#+BEGIN_SRC d
-@safe TxtAndAnchorTagPlusHasFootnotesUrlsImages obj_inline_markup_and_anchor_tags_and_misc(CMM)(
-  string[string]   obj_,
-  string           obj_key_,
-  CMM              conf_make_meta,
-  Flag!"_new_doc"  _new_doc
-) {
-  obj_txt["munge"]                                = obj_[obj_key_].dup;
-  obj_txt["munge"]                                = (obj_["is"].match(ctRegex!(`verse|code`)))
-  ? obj_txt["munge"]
-  : obj_txt["munge"].strip;
-  if (_new_doc) {
-    anchor_tag = "";
-  }
-  auto x = munge.init;
-  bool[string] obj_notes_and_links;
-  obj_notes_and_links["notes_reg"]                = false;
-  obj_notes_and_links["notes_star"]               = false;
-  obj_notes_and_links["links"]                    = false;
-  obj_notes_and_links["image_no_dimensions"]      = false;
-  if ((obj_["is"] == "para")
-    || (obj_["is"] == "heading")
-    || (obj_["is"] == "quote")
-    || (obj_["is"] == "group")
-    || (obj_["is"] == "block")
-    || (obj_["is"] == "verse")) {
-    obj_txt["munge"]                              = (obj_txt["munge"]).inline_markup_faces;
-    obj_txt["munge"]                              = (obj_txt["munge"]).links_and_images;
-  }
-  switch (obj_["is"]) {
-  case "heading":
-    if (_new_doc) {
-      anchor_tag                                  = "";
-    }
-    obj_txt["munge"] = _configured_auto_heading_numbering_and_segment_anchor_tags(obj_txt["munge"], obj_, conf_make_meta, _new_doc);
-    obj_txt["munge"] = _make_segment_anchor_tags_if_none_provided(obj_txt["munge"], obj_["lev"], _new_doc);
-    if (auto m = obj_txt["munge"].match(rgx.heading_anchor_tag)) {
-      anchor_tag                                  = m.captures[1];
-    } else if (obj_["lev"] == "1") {
-      writeln("heading anchor tag missing: ", obj_txt["munge"]);
-    }
-    x                                             = munge.munge_heading(obj_txt["munge"], reset_note_numbers);
-    reset_note_numbers = false;
-    goto default;
-  case "para":
-    x                                             = munge.munge_para(obj_txt["munge"]);
-    goto default;
-  case "group":
-    x                                             = munge.munge_group(obj_txt["munge"]);
-    goto default;
-  case "block":
-    x                                             = munge.munge_block(obj_txt["munge"]);
-    goto default;
-  case "quote":
-    x                                             = munge.munge_quote(obj_txt["munge"]);
-    goto default;
-  case "verse":
-    x                                             = munge.munge_verse(obj_txt["munge"]);
-    goto default;
-  case "code":
-    obj_txt["munge"]                              = munge.munge_code(obj_txt["munge"]);
-    break;
-  case "table":
-    obj_txt["munge"]                              = munge.munge_table(obj_txt["munge"]);
-    break;
-  case "comment":
-    obj_txt["munge"]                              = munge.munge_comment(obj_txt["munge"]);
-    break;
-  case "doc_end_reset":
-    munge.initialize_note_numbers();
-    break;
-  default:
-    /+ para, heading, group, block, verse +/
-    obj_txt["munge"]                              = x[0];
-    obj_notes_and_links["notes_reg"]              = x[1];
-    obj_notes_and_links["notes_star"]             = x[2];
-    obj_notes_and_links["notes_plus"]             = x[3];
-    obj_notes_and_links["links"]                  = x[4];
-    obj_notes_and_links["image_no_dimensions"]    = x[5];
-    break;
-  }
-  TxtAndAnchorTagPlusHasFootnotesUrlsImages t = tuple(
-    obj_txt["munge"],
-    anchor_tag,
-    obj_notes_and_links["notes_reg"],
-    obj_notes_and_links["notes_star"],
-    obj_notes_and_links["links"],
-    obj_notes_and_links["image_no_dimensions"],
-  );
-  anchor_tag = "";
-  return t;
-}
-invariant() {
-}
-#+END_SRC
-
-******* toc (table of contents), build, gather headings :markup:inline:
-
-#+NAME: meta_emitters_obj_inline_markup_table_of_contents
-#+BEGIN_SRC d
-@safe auto _clean_heading_toc_()(
-  char[] heading_toc_,
-) {
- auto m = (cast(char[]) heading_toc_).matchFirst(rgx.heading);
- heading_toc_ = (m.post).replaceAll(rgx.inline_notes_curly_gen, "");
- return heading_toc_;
-};
-@safe ObjGenericComposite[] flow_table_of_contents_gather_headings(CMM)(
-             string[string]         obj_,
-             CMM                    conf_make_meta,
-             string[string]         tag_in_seg,
-             string                 _anchor_tag,
-  return ref string[][string]       lev4_subtoc,
-             ObjGenericComposite[]  the_document_toc_section,
-) {
-  ObjGenericComposite comp_obj_toc;
-  mixin InternalMarkup;
-  static auto mkup = InlineMarkup();
-  char[] heading_toc_                             = (obj_["substantive"].dup.strip.to!(char[]))
-    .replaceAll(rgx.inline_notes_al, "");
-  heading_toc_                                    = _clean_heading_toc_(heading_toc_);
-  auto attrib = "";
-  string toc_txt_, subtoc_txt_;
-  int[string] indent;
-  if (obj_["lev_markup_number"].to!int > 0) {
-    indent = [
-      "hang_position" : obj_["lev_markup_number"].to!int,
-      "base_position" : obj_["lev_markup_number"].to!int,
-    ];
-    toc_txt_ = format("%s%s%s%s#%s%s",
-      mkup.lnk_o,
-      heading_toc_.strip,
-      mkup.lnk_c,
-      mkup.url_o,
-      _anchor_tag,
-      mkup.url_c,
-    );
-    toc_txt_= toc_txt_.links_and_images;
-    comp_obj_toc                                  = comp_obj_toc.init;
-    comp_obj_toc.metainfo.is_of_part              = "frontmatter";
-    comp_obj_toc.metainfo.is_of_section           = "toc";
-    comp_obj_toc.metainfo.is_of_type              = "para";
-    comp_obj_toc.metainfo.is_a                    = "toc";
-    comp_obj_toc.metainfo.ocn                     = 0;
-    comp_obj_toc.metainfo.identifier              = "";
-    comp_obj_toc.metainfo.object_number_off       = true;
-    comp_obj_toc.metainfo.object_number_type      = 0;
-    comp_obj_toc.metainfo.dummy_heading           = (an_object["dummy_heading_status"] == "t") ? true: false;
-    comp_obj_toc.attrib.indent_hang               = indent["hang_position"];
-    comp_obj_toc.attrib.indent_base               = indent["base_position"];
-    comp_obj_toc.attrib.bullet                    = false;
-    comp_obj_toc.text                             = toc_txt_.to!string.strip;
-    comp_obj_toc.has.inline_links                 = true;
-    the_document_toc_section                      ~= comp_obj_toc;
-  }
-  comp_obj_toc                                    = comp_obj_toc.init;
-  comp_obj_toc.metainfo.is_of_part                = "frontmatter";
-  comp_obj_toc.metainfo.is_of_section             = "toc";
-  comp_obj_toc.metainfo.is_of_type                = "para";
-  comp_obj_toc.metainfo.is_a                      = "toc";
-  comp_obj_toc.metainfo.ocn                       = 0;
-  comp_obj_toc.metainfo.identifier                = "";
-  comp_obj_toc.metainfo.object_number_off         = true;
-  comp_obj_toc.metainfo.object_number_type        = 0;
-  comp_obj_toc.metainfo.dummy_heading             = (an_object["dummy_heading_status"] == "t") ? true: false;
-  comp_obj_toc.attrib.bullet                      = false;
-  comp_obj_toc.has.inline_links                   = true;
-  switch (obj_["lev_markup_number"].to!int) {
-  case 0: .. case 3:
-    break;
-  case 4:
-    lev4_subtoc[tag_in_seg["seg_lv4"]] = [];
-    break;
-  case 5: .. case 7:
-    subtoc_txt_ = format("%s%s%s%s#%s%s",
-      mkup.lnk_o,
-      heading_toc_.strip,
-      mkup.lnk_c,
-      mkup.url_o,
-      _anchor_tag,
-      mkup.url_c,
-    );
-    lev4_subtoc[tag_in_seg["seg_lv4"]]
-    ~= links_and_images(obj_["lev_markup_number"]
-         ~ "~ " ~ subtoc_txt_.to!string.strip
-       );
-    break;
-  default:
-    break;
-  }
-  return the_document_toc_section;
-}
-invariant() {
-}
-#+END_SRC
-
-******* private:
-
-#+NAME: meta_emitters_obj_inline_markup_private_function_open
-#+BEGIN_SRC d
-private:
-#+END_SRC
-
-******** make heading number & segment anchor tags if instructed :markup:inline:segment:anchor:tags:
-
-#+NAME: meta_emitters_obj_inline_markup_heading_numbering_and_segment_anchor_tags
-#+BEGIN_SRC d
-static int[] heading_num = [ 0, 0, 0, 0 ];
-static string heading_number_auto_composite = "";
-static string heading_number_auto_composite_segname = "";
-static bool[] auto_heading_numbering = [ true, true, true, true];
-@safe static string _configured_auto_heading_numbering_and_segment_anchor_tags(CMM)(
-  string           munge_,
-  string[string]   obj_,
-  CMM              conf_make_meta,
-  bool             _new_doc,
-) {
-  if (_new_doc) {
-    heading_num                         = [ 0, 0, 0, 0 ];
-    heading_number_auto_composite       = "";
-    auto_heading_numbering              = [ true, true, true, true];
-  }
-  if (conf_make_meta.make.auto_num_top_lv) {
-    if (obj_["lev_markup_number"].to!int == 0) {
-      heading_num[0]                    = 0;
-      heading_num[1]                    = 0;
-      heading_num[2]                    = 0;
-      heading_num[3]                    = 0;
-      heading_number_auto_composite     = "";
-    }
-    /+ auto_num_depth minimum 0
-       (1.) default 2 (1.1.1) max 3 (1.1.1.1) implement +/
-    if (
-      conf_make_meta.make.auto_num_top_lv
-      > obj_["lev_markup_number"].to!uint
-    ) {
-      heading_num[1]                    = 0;
-      heading_num[2]                    = 0;
-      heading_num[3]                    = 0;
-    } else if (
-      conf_make_meta.make.auto_num_top_lv
-        == obj_["lev_markup_number"].to!uint
-    ) {
-      auto_heading_numbering[0] =
-        (munge_.match(rgx.auto_heading_numbering_off_lv1)) ? false : true;
-      if (auto_heading_numbering[0]) {
-        heading_num[0] ++;
-      }
-      heading_num[1]                    = 0;
-      heading_num[2]                    = 0;
-      heading_num[3]                    = 0;
-    } else if (
-      conf_make_meta.make.auto_num_top_lv
-        == (obj_["lev_markup_number"].to!uint - 1)
-    ) {
-      auto_heading_numbering[1] =
-        (munge_.match(rgx.auto_heading_numbering_off_lv2)) ? false : true;
-      if (auto_heading_numbering[0]
-      && auto_heading_numbering[1]) {
-        heading_num[1] ++;
-      }
-      heading_num[2]                    = 0;
-      heading_num[3]                    = 0;
-    } else if (
-      conf_make_meta.make.auto_num_top_lv
-        == (obj_["lev_markup_number"].to!uint - 2)
-    ) {
-      auto_heading_numbering[2] =
-        (munge_.match(rgx.auto_heading_numbering_off_lv3)) ? false : true;
-      if (auto_heading_numbering[0]
-      && auto_heading_numbering[1]
-      && auto_heading_numbering[2]) {
-        heading_num[2] ++;
-      }
-      heading_num[3]                    = 0;
-    } else if (
-      conf_make_meta.make.auto_num_top_lv
-        == (obj_["lev_markup_number"].to!uint - 3)
-    ) {
-      auto_heading_numbering[3] =
-        (munge_.match(rgx.auto_heading_numbering_off_lv4)) ? false : true;
-      if (auto_heading_numbering[0]
-      && auto_heading_numbering[1]
-      && auto_heading_numbering[2]
-      && auto_heading_numbering[3]) {
-        heading_num[3] ++;
-      }
-    }
-    if (auto_heading_numbering[0]) {
-      if (heading_num[3] > 0) {
-        heading_number_auto_composite
-          = (conf_make_meta.make.auto_num_depth.to!uint == 3
-            && auto_heading_numbering[3])
-          ? (format(q"┃%s.%s.%s.%s┃",
-              heading_num[0].to!string,
-              heading_num[1].to!string,
-              heading_num[2].to!string,
-              heading_num[3].to!string
-            ))
-          : "";
-      } else if (heading_num[2] > 0) {
-        heading_number_auto_composite
-          = ((conf_make_meta.make.auto_num_depth.to!uint >= 2)
-            && (conf_make_meta.make.auto_num_depth.to!uint <= 3)
-            && auto_heading_numbering[2])
-          ? (format(q"┃%s.%s.%s┃",
-              heading_num[0].to!string,
-              heading_num[1].to!string,
-              heading_num[2].to!string
-            ))
-          : "";
-      } else if (heading_num[1] > 0) {
-        heading_number_auto_composite
-          = ((conf_make_meta.make.auto_num_depth.to!uint >= 1)
-            && (conf_make_meta.make.auto_num_depth.to!uint <= 3)
-            && auto_heading_numbering[1])
-          ? (format(q"┃%s.%s┃",
-              heading_num[0].to!string,
-              heading_num[1].to!string
-            ))
-          : "";
-      } else if (heading_num[0] > 0
-        && munge_.match(rgx.auto_heading_numbering_lv1)
-      ) {
-        heading_number_auto_composite
-          = ((conf_make_meta.make.auto_num_depth.to!uint >= 0)
-            && (conf_make_meta.make.auto_num_depth.to!uint <= 3)
-            && auto_heading_numbering[0])
-          ? (format(q"┃%s┃",
-              heading_num[0].to!string
-            ))
-          : "";
-      } else {
-        heading_number_auto_composite = "";
-      }
-    }
-    heading_number_auto_composite_segname =
-      (heading_number_auto_composite.empty)
-        ? ""
-        : "seg_" ~ heading_number_auto_composite;
-    debug(heading_number_auto) {
-      writeln(heading_number_auto_composite);
-    }
-    if ((!empty(heading_number_auto_composite))
-    && (obj_["lev_markup_number"].to!uint >= conf_make_meta.make.auto_num_top_lv)) {
-      munge_ = munge_
-      .replaceFirst(rgx.heading,
-        "$1~$2 " ~ heading_number_auto_composite ~ ". ")
-      .replaceFirst(rgx.heading_marker_missing_tag,
-        "$1~" ~ heading_number_auto_composite_segname ~ " ");
-    }
-  }
-  return munge_;
-}
-#+END_SRC
-
-******** make segment anchor tags if not provided :markup:inline:segment:anchor:tags:
-
-#+NAME: meta_emitters_obj_inline_segment_anchor_tags_manufacture
-#+BEGIN_SRC d
-static int heading_num_lev1 = 0;
-@safe static string _make_segment_anchor_tags_if_none_provided()(
-  string munge_,
-  string lev_,
-  bool   _new_doc
-) {
-  if (!(munge_.match(rgx.heading_anchor_tag))) {
-    if (lev_ == "A") { // (_new_doc)
-      heading_num_lev1 = 0;
-    }
-    if (munge_.match(rgx.heading_identify_anchor_tag)) {
-      if (auto m = munge_.match(rgx.heading_extract_named_anchor_tag)) {
-        munge_ = munge_.replaceFirst(
-          rgx.heading_marker_missing_tag,
-          "$1~" ~ m.captures[1].toLower ~ "_"  ~ m.captures[2] ~ " ");
-        if (auto n = munge_.match(rgx.heading_anchor_tag_plus_colon)) {
-          auto tag_remunge_ = n.captures[2]
-            .replaceAll(rgx.heading_marker_tag_has_colon, "..");
-          munge_ = munge_.replaceFirst(rgx.heading_anchor_tag_plus_colon, n.captures[1] ~ tag_remunge_ ~ " ");
-        }
-      } else if (auto m = munge_.match(rgx.heading_extract_unnamed_anchor_tag)) {
-        munge_ = munge_.replaceFirst(
-          rgx.heading_marker_missing_tag,
-          "$1~" ~ "s" ~ m.captures[1] ~ " ");
-      }
-    } else if (lev_ == "1") { // (if not successful) manufacture a unique anchor tag for lev == "1"
-      heading_num_lev1 ++;
-      munge_ = munge_.replaceFirst(
-        rgx.heading_marker_missing_tag,
-        "$1~" ~ "x" ~ heading_num_lev1.to!string ~ " ");
-    }
-  }
-  return munge_;
-}
-#+END_SRC
-
-****** }
-
-#+NAME: meta_emitters_obj_inline_markup_private_function_close
-#+BEGIN_SRC d
-}
-#+END_SRC
-
-***** object attrib :attributes:
-****** { attributes structure open, public
-
-#+NAME: meta_emitters_obj_attributes
-#+BEGIN_SRC d
-struct ObjAttributes {
-  string[string] _obj_attrib;
-#+END_SRC
-
-******* emitter obj attributes, public
-
-#+NAME: meta_emitters_obj_attributes_public
-#+BEGIN_SRC d
-@safe string obj_attributes()(
-  string              obj_is_,
-  string              obj_raw,
-  ObjGenericComposite _comp_obj_heading,
-) {
-  scope(exit) {
-    destroy(obj_is_);
-    destroy(obj_raw);
-    destroy(_comp_obj_heading);
-  }
-  _obj_attrib["json"] ="{";
-  switch (obj_is_) {
-  case "heading":
-    _obj_attrib["json"] ~= txt_heading(obj_raw);
-    break;
-  case "para":
-    _obj_attrib["json"] ~= txt_para_and_blocks(obj_raw)
-    ~ txt_para(obj_raw);
-    break;
-  case "code":
-    _obj_attrib["json"] ~= txt_code(obj_raw);
-    break;
-  case "group":
-    _obj_attrib["json"] ~= txt_para_and_blocks(obj_raw)
-    ~ txt_group(obj_raw);
-    break;
-  case "block":
-    _obj_attrib["json"] ~= txt_para_and_blocks(obj_raw)
-    ~ txt_block(obj_raw);
-    break;
-  case "verse":
-    _obj_attrib["json"] ~= txt_verse(obj_raw);
-    break;
-  case "quote":
-    _obj_attrib["json"] ~= txt_quote(obj_raw);
-    break;
-  case "table":
-    _obj_attrib["json"] ~= txt_table(obj_raw);
-    break;
-  case "comment":
-    _obj_attrib["json"] ~= txt_comment(obj_raw);
-    break;
-  default:
-    _obj_attrib["json"] ~= txt_para(obj_raw);
-    break;
-  }
-  _obj_attrib["json"] ~= " }";
-  _obj_attrib["json"] = _set_additional_values_parse_as_json(_obj_attrib["json"], obj_is_, _comp_obj_heading);
-  debug(structattrib) {
-    if (oa_j["is"].str() == "heading") {
-      writeln(_obj_attrib["json"]);
-      writeln(
-        "is: ", oa_j["is"].str(),
-        "; object_number: ", oa_j["object_number"].integer()
-      );
-    }
-  }
-  return _obj_attrib["json"];
-}
-invariant() {
-}
-#+END_SRC
-
-******* private
-
-#+NAME: meta_emitters_obj_attributes_private
-#+BEGIN_SRC d
-private:
-string _obj_attributes;
-#+END_SRC
-
-******** para & blocks
-
-#+NAME: meta_emitters_obj_attributes_private_an_attribute_txt_para_and_blocks
-#+BEGIN_SRC d
-@safe string txt_para_and_blocks()(string obj_txt_in) {
-  if (obj_txt_in.matchFirst(rgx.para_bullet)) {
-    _obj_attributes =" \"bullet\": \"true\","
-    ~ " \"indent_hang\": 0,"
-    ~ " \"indent_base\": 0,";
-  } else if (auto m = obj_txt_in.matchFirst(rgx.para_bullet_indent)) {
-    _obj_attributes =" \"bullet\": \"true\","
-    ~ " \"indent_hang\": " ~ m["indent"].to!string ~ ","
-    ~ " \"indent_base\": " ~ m["indent"].to!string ~ ",";
-  } else if (auto m = obj_txt_in.matchFirst(rgx.para_indent_hang)) {
-    _obj_attributes =" \"bullet\": \"false\","
-    ~ " \"indent_hang\": " ~ m["hang"].to!string ~ ","
-    ~ " \"indent_base\": " ~ m["indent"].to!string ~ ",";
-  } else if (auto m = obj_txt_in.matchFirst(rgx.para_indent)) {
-    _obj_attributes =" \"bullet\": \"false\","
-    ~ " \"indent_hang\": " ~ m["indent"].to!string ~ ","
-    ~ " \"indent_base\": " ~ m["indent"].to!string ~ ",";
-  } else {
-    _obj_attributes =" \"bullet\": \"false\","
-    ~ " \"indent_hang\": 0,"
-    ~ " \"indent_base\": 0,";
-  }
-  return _obj_attributes;
-}
-#+END_SRC
-
-******** heading
-
-#+NAME: meta_emitters_obj_attributes_private_an_attribute_txt_heading
-#+BEGIN_SRC d
-@safe string txt_heading()(string obj_txt_in) {
-  _obj_attributes = " \"use\": \"content\","
-  ~ " \"of\": \"para\","
-  ~ " \"is\": \"heading\"";
-  return _obj_attributes;
-}
-invariant() {
-}
-#+END_SRC
-
-******** para
-
-#+NAME: meta_emitters_obj_attributes_private_an_attribute_txt_para
-#+BEGIN_SRC d
-@safe string txt_para()(string obj_txt_in) {
-  _obj_attributes = " \"use\": \"content\","
-  ~ " \"of\": \"para\","
-  ~ " \"is\": \"para\"";
-  return _obj_attributes;
-}
-invariant() {
-}
-#+END_SRC
-
-******** quote
-
-#+NAME: meta_emitters_obj_attributes_private_an_attribute_txt_quote
-#+BEGIN_SRC d
-@safe string txt_quote()(string obj_txt_in) {
-  _obj_attributes = " \"use\": \"content\","
-  ~ " \"of\": \"block\","
-  ~ " \"is\": \"quote\"";
-  return _obj_attributes;
-}
-invariant() {
-}
-#+END_SRC
-
-******** group
-
-#+NAME: meta_emitters_obj_attributes_private_an_attribute_txt_group
-#+BEGIN_SRC d
-@safe string txt_group()(string obj_txt_in) {
-  _obj_attributes = " \"use\": \"content\","
-  ~ " \"of\": \"block\","
-  ~ " \"is\": \"group\"";
-  return _obj_attributes;
-}
-invariant() {
-}
-#+END_SRC
-
-******** block
-
-#+NAME: meta_emitters_obj_attributes_private_an_attribute_txt_block
-#+BEGIN_SRC d
-@safe string txt_block()(string obj_txt_in) {
-  _obj_attributes = " \"use\": \"content\","
-  ~ " \"of\": \"block\","
-  ~ " \"is\": \"block\"";
-  return _obj_attributes;
-}
-invariant() {
-}
-#+END_SRC
-
-******** verse
-
-#+NAME: meta_emitters_obj_attributes_private_an_attribute_txt_verse
-#+BEGIN_SRC d
-@safe string txt_verse()(string obj_txt_in) {
-  _obj_attributes = " \"use\": \"content\","
-  ~ " \"of\": \"block\","
-  ~ " \"is\": \"verse\"";
-  return _obj_attributes;
-}
-invariant() {
-}
-#+END_SRC
-
-******** code
-
-#+NAME: meta_emitters_obj_attributes_private_an_attribute_txt_code
-#+BEGIN_SRC d
-@safe string txt_code()(string obj_txt_in) {
-  _obj_attributes = " \"use\": \"content\","
-  ~ " \"of\": \"block\","
-  ~ " \"is\": \"code\"";
-  return _obj_attributes;
-}
-invariant() {
-}
-#+END_SRC
-
-******** table
-
-#+NAME: meta_emitters_obj_attributes_private_an_attribute_txt_table
-#+BEGIN_SRC d
-@safe string txt_table()(string obj_txt_in) {
-  _obj_attributes = " \"use\": \"content\","
-  ~ " \"of\": \"block\","
-  ~ " \"is\": \"table\"";
-  return _obj_attributes;
-}
-invariant() {
-}
-#+END_SRC
-
-******** comment
-
-#+NAME: meta_emitters_obj_attributes_private_an_attribute_txt_comment
-#+BEGIN_SRC d
-@safe string txt_comment()(string obj_txt_in) {
-  _obj_attributes = " \"use\": \"comment\","
-  ~ " \"of\": \"comment\","
-  ~ " \"is\": \"comment\"";
-  return _obj_attributes;
-}
-invariant() {
-}
-#+END_SRC
-
-******** set additional attribute values, parse as json
-
-#+NAME: meta_emitters_obj_attributes_private_json
-#+BEGIN_SRC d
-@safe string _set_additional_values_parse_as_json()(
-  string              _obj_attrib,
-  string              obj_is_,
-  ObjGenericComposite _comp_obj_heading,
-) {
-  JSONValue oa_j = parseJSON(_obj_attrib);
-  assert(
-    (oa_j.type == JSON_TYPE.OBJECT)
-  );
-  if (obj_is_ == "heading") {
-    oa_j.object["object_number"]              = _comp_obj_heading.metainfo.ocn;
-    oa_j.object["lev_markup_number"]          = _comp_obj_heading.metainfo.heading_lev_markup;
-    oa_j.object["lev_collapsed_number"]       = _comp_obj_heading.metainfo.heading_lev_collapsed;
-    oa_j.object["heading_ptr"]                = _comp_obj_heading.ptr.heading;
-    oa_j.object["doc_object_ptr"]             = _comp_obj_heading.ptr.doc_object;
-  }
-  oa_j.object["parent_object_number"]         = _comp_obj_heading.metainfo.parent_ocn;
-  oa_j.object["parent_lev_markup_number"]     = _comp_obj_heading.metainfo.parent_lev_markup;
-  _obj_attrib                                 = oa_j.toString();
-  return _obj_attrib;
-}
-#+END_SRC
-
-****** }
-
-#+NAME: meta_emitters_obj_attributes_private_close
-#+BEGIN_SRC d
-}
-#+END_SRC
-
-**** book index :book:index:
-***** book index nugget hash :hash:nugget:
-
-#+NAME: meta_emitters_bookindex_nugget
-#+BEGIN_SRC d
-struct BookIndexNuggetHash {
-  string main_term, sub_term, sub_term_bits;
-  int object_number_offset, object_number_endpoint;
-  string[] object_numbers;
-  string[][string][string] bi_hash_nugget;
-  string[] bi_main_terms_split_arr;
-  @safe string[][string][string] bookindex_nugget_hash(N,S)(
-    string bookindex_section,
-    N      obj_cite_digits,
-    S      tag_in_seg,
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(obj_cite_digits.object_number) == int));
-    }
-    debug(bookindexraw) {
-      if (!bookindex_section.empty) {
-        writeln(
-          "* [bookindex] ",
-          "[", obj_cite_digits.object_number.to!string, ": ", tag_in_seg["seg_lv4"], "] ", bookindex_section,
-          "  - - - ",
-          "[", obj_cite_digits.object_number.to!string, "] ", bookindex_section
-        );
-      }
-    }
-    static auto rgx = RgxI();
-    if (!bookindex_section.empty) {
-      auto bi_main_terms_split_arr
-        = bookindex_section.split(rgx.bi_main_terms_split);
-      foreach (bi_main_terms_content; bi_main_terms_split_arr) {
-        auto bi_main_term_and_rest
-          = bi_main_terms_content.split(rgx.bi_main_term_plus_rest_split);
-        if (auto m = bi_main_term_and_rest[0].match(
-          rgx.bi_term_and_object_numbers_match)
-        ) {
-          main_term = m.captures[1].strip;
-          object_number_offset = m.captures[2].to!int;
-          object_number_endpoint = (obj_cite_digits.object_number + object_number_offset);
-          object_numbers ~= (obj_cite_digits.object_number.to!string
-          ~ "-" ~ object_number_endpoint.to!string);
-        } else {
-          main_term = bi_main_term_and_rest[0].strip;
-          object_numbers ~= obj_cite_digits.object_number.to!string;
-        }
-        bi_hash_nugget[main_term]["_a"] ~= object_numbers;
-        object_numbers = null;
-        if (bi_main_term_and_rest.length > 1) {
-          auto bi_sub_terms_split_arr
-            = bi_main_term_and_rest[1].split(
-              rgx.bi_sub_terms_plus_object_number_offset_split
-            );
-          foreach (sub_terms_bits; bi_sub_terms_split_arr) {
-            if (auto m = sub_terms_bits.match(rgx.bi_term_and_object_numbers_match)) {
-              sub_term = m.captures[1].strip;
-              object_number_offset = m.captures[2].to!int;
-              object_number_endpoint = (obj_cite_digits.object_number + object_number_offset);
-              object_numbers ~= (obj_cite_digits.object_number.to!string
-              ~ " - " ~ object_number_endpoint.to!string);
-            } else {
-              sub_term = sub_terms_bits.strip;
-              object_numbers ~= obj_cite_digits.object_number.to!string;
-            }
-            if (!empty(sub_term)) {
-              bi_hash_nugget[main_term][sub_term] ~= object_numbers;
-            }
-            object_numbers = null;
-          }
-        }
-      }
-    }
-    return bi_hash_nugget;
-  }
-  invariant() {
-  }
-}
-#+END_SRC
-
-***** book index (sort &) report indented :report:indented:
-
-#+NAME: meta_emitters_bookindex_report_indented
-#+BEGIN_SRC d
-struct BookIndexReportIndent {
-  int mkn, skn;
-  @safe void bookindex_report_indented()(
-    string[][string][string] bookindex_unordered_hashes
-  ) {
-    auto mainkeys
-      = bookindex_unordered_hashes.byKey.array.sort().release;
-    foreach (mainkey; mainkeys) {
-      debug(bookindex1) {
-        writeln(mainkey);
-      }
-      auto subkeys
-        = bookindex_unordered_hashes[mainkey].byKey.array.sort().release;
-      foreach (subkey; subkeys) {
-        debug(bookindex1) {
-          writeln("  ", subkey);
-          writeln("    ", to!string(
-            bookindex_unordered_hashes[mainkey][subkey]
-          ));
-        }
-        ++skn;
-      }
-      ++mkn;
-    }
-  }
-}
-#+END_SRC
-
-***** book index (sort &) report section :report:section:
-****** { book index struct open
-
-#+NAME: meta_emitters_bookindex_report_section_function_open
-#+BEGIN_SRC d
-struct BookIndexReportSection {
-  int  mkn, skn;
-  static auto rgx = RgxI();
-  static auto munge = ObjInlineMarkupMunge();
-#+END_SRC
-
-******* bookindex write section
-
-#+NAME: meta_emitters_bookindex_report_section_function_write_section
-#+BEGIN_SRC d
-@safe void bookindex_write_section()(
-  string[][string][string] bookindex_unordered_hashes
-) {
-  auto mainkeys =
-    bookindex_unordered_hashes.byKey.array
-    .sort!("toUpper(a) < toUpper(b)", SwapStrategy.stable).release;
-  foreach (mainkey; mainkeys) {
-    write("_0_1 ⑆!┨", mainkey, "┣! ");
-    foreach (ref_; bookindex_unordered_hashes[mainkey]["_a"]) {
-      auto go = ref_.replaceAll(rgx.book_index_go, "$1");
-      write(" {", ref_, "}#", go, ", ");
-    }
-    writeln(" \\\\");
-    bookindex_unordered_hashes[mainkey].remove("_a");
-    auto subkeys =
-      bookindex_unordered_hashes[mainkey].byKey.array
-      .sort!("toUpper(a) < toUpper(b)", SwapStrategy.stable).release;
-    foreach (subkey; subkeys) {
-      write("  ", subkey, ", ");
-      foreach (ref_; bookindex_unordered_hashes[mainkey][subkey]) {
-        auto go = ref_.replaceAll(rgx.book_index_go, "$1");
-        write(" {", ref_, "}#", go, ", ");
-      }
-      writeln(" \\\\");
-      ++skn;
-    }
-    ++mkn;
-  }
-}
-#+END_SRC
-
-******* book index (sort &) build section :report:section:
-
-#+NAME: meta_emitters_bookindex_report_section_function_build_abstraction
-#+BEGIN_SRC d
-@system auto bookindex_build_abstraction_section(N,B)(
-  string[][string][string] bookindex_unordered_hashes,
-  N                        obj_cite_digits,
-  B                        opt_action,
-) {
-  debug(asserts) {
-    static assert(is(typeof(obj_cite_digits.object_number)             == int));
-  }
-  mixin spineNode;
-  mixin InternalMarkup;
-  static auto mkup = InlineMarkup();
-  string type_is;
-  string lev;
-  int heading_lev_markup, heading_lev_collapsed;
-  string attrib;
-  int[string] indent;
-  auto mainkeys =
-    bookindex_unordered_hashes.byKey.array
-    .sort!("toUpper(a) < toUpper(b)", SwapStrategy.stable).release;
-  ObjGenericComposite[] bookindex_section;
-  ObjGenericComposite comp_obj_heading_, comp_obj_para;
-  auto node_para_int_ = node_metadata_para_int;
-  auto node_para_str_ = node_metadata_para_str;
-  if ((mainkeys.length > 0)
-  && (opt_action.backmatter
-  && opt_action.section_bookindex)) {
-    string bi_tmp;
-    string[] bi_tmp_tags;
-    {
-      comp_obj_heading_                                     = comp_obj_heading_.init;
-      comp_obj_heading_.metainfo.is_of_part                 = "backmatter";
-      comp_obj_heading_.metainfo.is_of_section              = "bookindex";
-      comp_obj_heading_.metainfo.is_of_type                 = "para";
-      comp_obj_heading_.metainfo.is_a                       = "heading";
-      comp_obj_heading_.text                                = "Book Index";
-      comp_obj_heading_.metainfo.ocn                        = 0;
-      comp_obj_heading_.metainfo.identifier                 = "";
-      comp_obj_heading_.metainfo.dummy_heading              = false;
-      comp_obj_heading_.metainfo.object_number_off          = false;
-      comp_obj_heading_.metainfo.object_number_type         = 0;
-      comp_obj_heading_.tags.segment_anchor_tag_epub        = "_part_book_index";
-      comp_obj_heading_.tags.anchor_tag_html                = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      comp_obj_heading_.tags.in_segment_html                = "bookindex";
-      comp_obj_heading_.tags.anchor_tags                    = ["section_bookindex"];
-      comp_obj_heading_.metainfo.heading_lev_markup         = 1;
-      comp_obj_heading_.metainfo.heading_lev_collapsed      = 1;
-      comp_obj_heading_.metainfo.parent_ocn                 = 1;
-      comp_obj_heading_.metainfo.parent_lev_markup          = 0;
-      comp_obj_heading.has.inline_links                     = true;
-      bookindex_section                                     ~= comp_obj_heading_;
-      tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-      tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      ++mkn;
-    }
-    {
-      comp_obj_heading_                                     = comp_obj_heading_.init;
-      comp_obj_heading_.metainfo.is_of_part                 = "backmatter";
-      comp_obj_heading_.metainfo.is_of_section              = "bookindex";
-      comp_obj_heading_.metainfo.is_of_type                 = "para";
-      comp_obj_heading_.metainfo.is_a                       = "heading";
-      comp_obj_heading_.text                                = "Index";
-      comp_obj_heading_.metainfo.ocn                        = 0;
-      comp_obj_heading_.metainfo.identifier                 = "";
-      comp_obj_heading_.metainfo.dummy_heading              = true;
-      comp_obj_heading_.metainfo.object_number_off          = true;
-      comp_obj_heading_.metainfo.object_number_type         = 0;
-      comp_obj_heading_.tags.segment_anchor_tag_epub        = "bookindex";
-      comp_obj_heading_.tags.anchor_tag_html                = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      comp_obj_heading_.tags.in_segment_html                = comp_obj_heading_.tags.anchor_tag_html;
-      comp_obj_heading_.metainfo.heading_lev_markup         = 4;
-      comp_obj_heading_.metainfo.heading_lev_collapsed      = 2;
-      comp_obj_heading_.metainfo.parent_ocn                 = 1;
-      comp_obj_heading_.metainfo.parent_lev_markup          = 0;
-      comp_obj_heading.has.inline_links                     = false;
-      comp_obj_heading_.tags.anchor_tags                    = ["bookindex"];
-      bookindex_section                                     ~= comp_obj_heading_;
-      tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-      tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      ++mkn;
-    }
-    import std.array : appender;
-    auto buffer = appender!(char[])();
-    string[dchar] transTable = [' ' : "_"];
-    foreach (mainkey; mainkeys) {
-      bi_tmp_tags = [""];
-      bi_tmp = "⑆" ~ mkup.bold ~ mkup.ff_o ~ mainkey ~ mkup.ff_c ~ mkup.bold ~ " ";
-      buffer.clear();
-      bi_tmp_tags ~= translate(mainkey, transTable);
-      auto bkidx_lnk(string locs) {
-        string markup = "";
-        if (auto m = locs.matchFirst(rgx.book_index_go)) {
-          markup
-            = links_and_images("{ " ~ m["link"] ~ " }"
-            ~ "#" ~ m["ocn"] ~ ", ");
-        } else {
-          writeln(__LINE__, ": ", locs);
-        }
-        return markup;
-      }
-      foreach (ref_; bookindex_unordered_hashes[mainkey]["_a"]) {
-        bi_tmp ~= bkidx_lnk(ref_);
-      }
-      bi_tmp ~= " \\\\\n    ";
-      bookindex_unordered_hashes[mainkey].remove("_a");
-      auto subkeys =
-        bookindex_unordered_hashes[mainkey].byKey.array
-        .sort!("toUpper(a) < toUpper(b)", SwapStrategy.stable).release;
-      foreach (subkey; subkeys) {
-        bi_tmp ~= subkey ~ ", ";
-        buffer.clear();
-        bi_tmp_tags ~= translate(subkey, transTable);
-        foreach (ref_; bookindex_unordered_hashes[mainkey][subkey]) {
-          bi_tmp ~= bkidx_lnk(ref_);
-        }
-        bi_tmp ~= " \\\\\n    ";
-        ++skn;
-      }
-      bi_tmp                                                 = bi_tmp.replaceFirst(rgx.trailing_linebreak, "");
-      comp_obj_para                                          = comp_obj_para.init;
-      comp_obj_para.metainfo.is_of_part                      = "backmatter";
-      comp_obj_para.metainfo.is_of_section                   = "bookindex";
-      comp_obj_para.metainfo.is_of_type                      = "para";
-      comp_obj_para.metainfo.is_a                            = "bookindex";
-      comp_obj_para.text                                     = bi_tmp.to!string.strip;
-      comp_obj_para.metainfo.ocn                             = 0;
-      comp_obj_para.metainfo.identifier                      = "";
-      comp_obj_para.metainfo.object_number_off               = true;
-      comp_obj_para.metainfo.object_number_type              = 0;
-      comp_obj_para.tags.anchor_tags                         = bi_tmp_tags;
-      comp_obj_para.attrib.indent_hang                       = 0;
-      comp_obj_para.attrib.indent_base                       = 1;
-      comp_obj_para.attrib.bullet                            = false;
-      comp_obj_para.has.inline_links                         = true;
-      comp_obj_para.text                                     = bi_tmp.to!string.strip;
-      bookindex_section                                      ~= comp_obj_para;
-      ++mkn;
-    }
-  } else {                              // no book index, (figure out what to do here)
-    comp_obj_heading_                                       = comp_obj_heading_.init;
-    comp_obj_heading_.text                                  = "(skip) there is no Book Index";
-    comp_obj_heading_.metainfo.ocn                          = 0;
-    comp_obj_heading_.metainfo.identifier                   = "";
-    comp_obj_heading_.metainfo.dummy_heading                = true;
-    comp_obj_heading_.metainfo.object_number_off            = true;
-    comp_obj_heading_.metainfo.object_number_type           = 0;
-    comp_obj_heading_.metainfo.heading_lev_markup           = 1;
-    comp_obj_heading_.metainfo.heading_lev_collapsed        = 1;
-    comp_obj_heading_.metainfo.parent_ocn                   = 1;
-    comp_obj_heading_.metainfo.parent_lev_markup            = 0;
-    bookindex_section                                       ~= comp_obj_heading_;
-  }
-  auto t = tuple(
-    bookindex_section,
-    obj_cite_digits
-  );
-  return t;
-}
-#+END_SRC
-
-****** }
-
-#+NAME: meta_emitters_bookindex_report_section_function_close
-#+BEGIN_SRC d
-}
-#+END_SRC
-
-**** (end)notes section :endnotes:section:
-
-#+NAME: meta_emitters_endnotes_function_open
-#+BEGIN_SRC d
-struct NotesSection {
-  string[string] object_notes;
-  int previous_count;
-  int mkn;
-  static auto rgx = RgxI();
-#+END_SRC
-
-***** { gather notes for endnote section struct open
-
-#+NAME: meta_emitters_endnotes_function_gather_notes
-#+BEGIN_SRC d
-@safe private auto gather_notes_for_endnote_section(
-  ObjGenericComposite[] contents_am,
-  string[string]        tag_in_seg,
-  int                   cntr,
-) {
-  assert((contents_am[cntr].metainfo.is_a == "para")
-  || (contents_am[cntr].metainfo.is_a     == "heading")
-  || (contents_am[cntr].metainfo.is_a     == "quote")
-  || (contents_am[cntr].metainfo.is_a     == "group")
-  || (contents_am[cntr].metainfo.is_a     == "block")
-  || (contents_am[cntr].metainfo.is_a     == "verse"));
-  assert(cntr >= previous_count);
-  assert(
-    (contents_am[cntr].text).match(
-    rgx.inline_notes_al_all_note)
-  );
-  mixin InternalMarkup;
-  previous_count = cntr;
-  static auto mkup = InlineMarkup();
-  static auto munge = ObjInlineMarkupMunge();
-  foreach(m;
-    (contents_am[cntr].text).matchAll(
-      rgx.inline_notes_al_special_char_note)
-  ) {
-    debug(endnotes_build) {
-      writeln(
-        "{^", mkup.ff_o, m["char"], ".", mkup.ff_c, "^}"
-        ~ mkup.mark_internal_site_lnk,
-        tag_in_seg["seg_lv4"],
-          ".fnSuffix#noteref_\n  ", m["char"], " ",
-        m["note"]); // sometimes need segment name (segmented html & epub)
-    }
-    // you need anchor for segments at this point ->
-    object_notes["anchor"] ~= "note_" ~ m["char"] ~ "』";
-    object_notes["notes"]  ~= (tag_in_seg["seg_lv4"].empty)
-    ? (links_and_images(
-        "{" ~ mkup.superscript  ~ mkup.ff_o ~ m["char"] ~ "." ~ mkup.ff_c  ~ mkup.superscript  ~ "}#noteref_"
-        ~ m["char"]) ~ " "
-        ~ m["note"] ~ "』"
-      )
-    : (links_and_images(
-        "{" ~ mkup.superscript ~ mkup.ff_o ~ m["char"] ~ "." ~ mkup.ff_c  ~ mkup.superscript ~ "}"
-         ~ mkup.mark_internal_site_lnk
-         ~ tag_in_seg["seg_lv4"]
-         ~ ".fnSuffix#noteref_"
-         ~ m["char"]) ~ " "
-         ~ m["note"] ~ "』"
-      );
-  }
-  foreach(m;
-    (contents_am[cntr].text).matchAll(
-      rgx.inline_notes_al_regular_number_note)
-  ) {
-    debug(endnotes_build) {
-      writeln(
-        "{^", mkup.ff_o, m["num"], ".", mkup.ff_c, "^}"
-        ~ mkup.mark_internal_site_lnk,
-        tag_in_seg["seg_lv4"],
-          ".fnSuffix#noteref_\n  ", m["num"], " ",
-        m["note"]); // sometimes need segment name (segmented html & epub)
-    }
-    // you need anchor for segments at this point ->
-    object_notes["anchor"] ~= "note_" ~ m["num"] ~ "』";
-    object_notes["notes"]  ~= (tag_in_seg["seg_lv4"].empty)
-    ? (links_and_images(
-        "{" ~ mkup.superscript  ~ mkup.ff_o ~ m["num"] ~ "." ~ mkup.ff_c  ~ mkup.superscript  ~ "}#noteref_"
-        ~ m["num"]) ~ " "
-        ~ m["note"] ~ "』"
-      )
-    : (links_and_images(
-        "{" ~ mkup.superscript ~ mkup.ff_o ~ m["num"] ~ "." ~ mkup.ff_c  ~ mkup.superscript ~ "}"
-         ~ mkup.mark_internal_site_lnk
-         ~ tag_in_seg["seg_lv4"]
-         ~ ".fnSuffix#noteref_"
-         ~ m["num"]) ~ " "
-         ~ m["note"] ~ "』"
-      );
-  }
-  return object_notes;
-}
-#+END_SRC
-
-****** gathered notes
-
-#+NAME: meta_emitters_endnotes_function_gathered_notes
-#+BEGIN_SRC d
-@safe private auto gathered_notes() {
-  string[][string] endnotes_;
-  if (object_notes.length > 1) {
-    endnotes_["notes"] = (object_notes["notes"].split(rgx.break_string))[0..$-1];
-    endnotes_["anchor"] = (object_notes["anchor"].split(rgx.break_string))[0..$-1];
-  } else {
-    endnotes_["notes"] = [];
-    endnotes_["anchor"] = [];
-  }
-  return endnotes_;
-}
-#+END_SRC
-
-****** endnote objects
-
-#+NAME: meta_emitters_endnotes_function_endnote_objects
-#+BEGIN_SRC d
-@safe private auto endnote_objects(N,O)(
-  N              obj_cite_digits,
-  O              opt_action,
-) {
-  mixin spineNode;
-  ObjGenericComposite[] the_document_endnotes_section;
-  auto endnotes_ = gathered_notes();
-  string type_is;
-  string lev, lev_markup_number, lev_collapsed_number;
-  string attrib;
-  int[string] indent;
-  ObjGenericComposite comp_obj_heading_;
-  if ((endnotes_["notes"].length > 0)
-  && (opt_action.backmatter && opt_action.section_endnotes)) {
-    {
-      comp_obj_heading_                                     = comp_obj_heading_.init;
-      comp_obj_heading_.metainfo.is_of_part                 = "backmatter";
-      comp_obj_heading_.metainfo.is_of_section              = "endnotes";
-      comp_obj_heading_.metainfo.is_of_type                 = "para";
-      comp_obj_heading_.metainfo.is_a                       = "heading";
-      comp_obj_heading_.text                                = "Endnotes";
-      comp_obj_heading_.metainfo.ocn                        = 0;
-      comp_obj_heading_.metainfo.identifier                 = "";
-      comp_obj_heading_.metainfo.dummy_heading              = false;
-      comp_obj_heading_.metainfo.object_number_off          = false;
-      comp_obj_heading_.metainfo.object_number_type         = 0;
-      comp_obj_heading_.tags.segment_anchor_tag_epub        = "_part_endnotes";
-      comp_obj_heading_.tags.anchor_tag_html                = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      comp_obj_heading_.tags.in_segment_html                = "endnotes";
-      comp_obj_heading_.tags.anchor_tags                    = ["section_endnotes"];
-      comp_obj_heading_.metainfo.heading_lev_markup         = 1;
-      comp_obj_heading_.metainfo.heading_lev_collapsed      = 1;
-      comp_obj_heading_.metainfo.parent_ocn                 = 1;
-      comp_obj_heading_.metainfo.parent_lev_markup          = 0;
-      the_document_endnotes_section                         ~= comp_obj_heading_;
-      tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-      tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      ++mkn;
-    }
-    {
-      comp_obj_heading_                                     = comp_obj_heading_.init;
-      comp_obj_heading_.metainfo.is_of_part                 = "backmatter";
-      comp_obj_heading_.metainfo.is_of_section              = "endnotes";
-      comp_obj_heading_.metainfo.is_of_type                 = "para";
-      comp_obj_heading_.metainfo.is_a                       = "heading";
-      comp_obj_heading_.text                                = "Endnotes";
-      comp_obj_heading_.metainfo.ocn                        = 0;
-      comp_obj_heading_.metainfo.identifier                 = "";
-      comp_obj_heading_.metainfo.dummy_heading              = true;
-      comp_obj_heading_.metainfo.object_number_off          = true;
-      comp_obj_heading_.metainfo.object_number_type         = 0;
-      comp_obj_heading_.tags.segment_anchor_tag_epub        = "endnotes";
-      comp_obj_heading_.tags.anchor_tag_html                = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      comp_obj_heading_.tags.in_segment_html                = comp_obj_heading_.tags.anchor_tag_html;
-      comp_obj_heading_.metainfo.heading_lev_markup         = 4;
-      comp_obj_heading_.metainfo.heading_lev_collapsed      = 2;
-      comp_obj_heading_.metainfo.parent_ocn                 = 1;
-      comp_obj_heading_.metainfo.parent_lev_markup          = 0;
-      comp_obj_heading_.tags.anchor_tags                    = ["endnotes"];
-      the_document_endnotes_section                         ~= comp_obj_heading_;
-      tag_assoc[comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = comp_obj_heading_.tags.in_segment_html;
-      tag_assoc[comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = comp_obj_heading_.tags.segment_anchor_tag_epub;
-      ++mkn;
-    }
-  } else {
-    comp_obj_heading_                                       = comp_obj_heading_.init;
-    comp_obj_heading_.metainfo.is_of_part                   = "empty";
-    comp_obj_heading_.metainfo.is_of_section                = "empty";
-    comp_obj_heading_.metainfo.is_of_type                   = "para";
-    comp_obj_heading_.metainfo.is_a                         = "heading";
-    comp_obj_heading_.text                                  = "(skip) there are no Endnotes";
-    comp_obj_heading_.metainfo.ocn                          = 0;
-    comp_obj_heading_.metainfo.identifier                   = "";
-    comp_obj_heading_.metainfo.dummy_heading                = true;
-    comp_obj_heading_.metainfo.object_number_off            = true;
-    comp_obj_heading_.metainfo.object_number_type           = 0;
-    comp_obj_heading_.metainfo.heading_lev_markup           = 1;
-    comp_obj_heading_.metainfo.heading_lev_collapsed        = 1;
-    comp_obj_heading_.metainfo.parent_ocn                   = 1;
-    comp_obj_heading_.metainfo.parent_lev_markup            = 0;
-    the_document_endnotes_section                           ~= comp_obj_heading_;
-  }
-  if (opt_action.backmatter && opt_action.section_endnotes) {
-    ObjGenericComposite comp_obj_endnote_;
-    comp_obj_endnote_                                       = comp_obj_endnote_.init;
-    comp_obj_endnote_.metainfo.is_of_part                   = "backmatter";
-    comp_obj_endnote_.metainfo.is_of_section                = "endnotes";
-    comp_obj_endnote_.metainfo.is_of_type                   = "para";
-    comp_obj_endnote_.metainfo.is_a                         = "endnote";
-    comp_obj_endnote_.metainfo.ocn                          = 0;
-    comp_obj_endnote_.metainfo.identifier                   = "";
-    // comp_obj_heading_.metainfo.dummy_heading                = false;
-    comp_obj_heading_.metainfo.object_number_off            = true;
-    comp_obj_heading_.metainfo.object_number_type           = 0;
-    comp_obj_endnote_.attrib.indent_hang                    = 0;
-    comp_obj_endnote_.attrib.indent_base                    = 0;
-    comp_obj_endnote_.attrib.bullet                         = false;
-    foreach (i, endnote; endnotes_["notes"]) {
-      auto     m                                            = endnote.matchFirst(rgx.note_ref);
-      string   notenumber                                   = m["ref"].to!string;
-      string   anchor_tag                                   = "note_" ~ notenumber;
-      comp_obj_endnote_.tags.anchor_tags                    = [ endnotes_["anchor"][i] ];
-      comp_obj_endnote_.has.inline_links                    = true;
-      comp_obj_endnote_.text                                = endnote.inline_markup_faces.strip;
-      the_document_endnotes_section                         ~= comp_obj_endnote_;
-    }
-  }
-  auto t = tuple(the_document_endnotes_section, obj_cite_digits);
-  return t;
-}
-#+END_SRC
-
-***** }
-
-#+NAME: meta_emitters_endnotes_function_close
-#+BEGIN_SRC d
-}
-#+END_SRC
-
-**** bibliography :bibliography:
-***** { biblio struct
-
-#+NAME: meta_emitters_bibliography_function_open
-#+BEGIN_SRC d
-struct Bibliography {
-#+END_SRC
-
-****** biblio
-
-#+NAME: meta_emitters_bibliography_function_biblio_sorted
-#+BEGIN_SRC d
-@system public JSONValue[] flow_bibliography_()(
-  return ref string[]    biblio_unsorted_incomplete,
-  return ref JSONValue[] bib_arr_json
-) {
-  JSONValue[] biblio_unsorted
-    = biblio_make_unsorted_array_of_json_objects(biblio_unsorted_incomplete, bib_arr_json); // TODO lookat returns
-  biblio_arr_json = [];
-  biblio_unsorted_incomplete = [];
-  JSONValue[] biblio_sorted__ = biblio_sort(biblio_unsorted);
-  debug(biblio0) {
-    biblio_debug(biblio_sorted__);
-    writeln("---");
-    writeln("unsorted incomplete: ", biblio_unsorted_incomplete.length);
-    writeln("json:                ", bib_arr_json.length);
-    writeln("unsorted:            ", biblio_unsorted.length);
-    writeln("sorted:              ", biblio_sorted__.length);
-    int cntr;
-    int[7] x;
-    while (cntr < x.length) {
-      writeln(cntr, ": ", biblio_sorted__[cntr]["fulltitle"]);
-      cntr++;
-    }
-  }
-  return biblio_sorted__;
-}
-#+END_SRC
-
-****** biblio unsorted complete
-
-#+NAME: meta_emitters_bibliography_function_biblio_unsorted_json_object_array
-#+BEGIN_SRC d
-@system final private JSONValue[] biblio_make_unsorted_array_of_json_objects()(
-  string[]      biblio_unordered,
-  JSONValue[]   bib_arr_json
-) {
-  foreach (bibent; biblio_unordered) {
-    /+ update bib to include deemed_author, needed for:
-      sort_bibliography_array_by_deemed_author_year_title
-      either: sort on multiple fields, or; create such sort field
-    +/
-    JSONValue j = parseJSON(bibent);
-    if (!empty(j["fulltitle"].str)) {
-      if (!empty(j["author_raw"].str)) {
-        j["deemed_author"] = j["author_arr"][0];
-      } else if (!empty(j["editor_raw"].str)) {
-        j["deemed_author"] = j["editor_arr"][0];
-      }
-      j["sortby_deemed_author_year_title"] = (
-        j["deemed_author"].str ~
-         "; " ~
-         j["year"].str ~
-         "; "  ~
-         j["fulltitle"].str
-      );
-    }
-    bib_arr_json ~= j;
-  }
-  return bib_arr_json.dup;
-}
-#+END_SRC
-
-****** biblio sort
-
-#+NAME: meta_emitters_bibliography_function_biblio_sort_json
-#+BEGIN_SRC d
-@system final private JSONValue[] biblio_sort()(JSONValue[] biblio_unordered) {
-  JSONValue[] biblio_sorted_;
-  biblio_sorted_
-    = sort!((a, b){
-      return ((a["sortby_deemed_author_year_title"].str) < (b["sortby_deemed_author_year_title"].str));
-    })(biblio_unordered).array;
-  debug(bibliosorted) {
-    foreach (j; biblio_sorted_) {
-      if (!empty(j["fulltitle"].str)) {
-        writeln(j["sortby_deemed_author_year_title"]);
-      }
-    }
-  }
-  return biblio_sorted_;
-}
-#+END_SRC
-
-****** biblio debug
-
-#+NAME: meta_emitters_bibliography_function_biblio_sorted_json
-#+BEGIN_SRC d
-@system void biblio_debug()(JSONValue[] biblio_sorted) {
-  debug(biblio0) {
-    foreach (j; biblio_sorted) {
-      if (!empty(j["fulltitle"].str)) {
-        writeln(j["sortby_deemed_author_year_title"]);
-      }
-    }
-  }
-}
-#+END_SRC
-
-***** }
-
-#+NAME: meta_emitters_bibliography_function_close
-#+BEGIN_SRC d
-}
-#+END_SRC
-
-**** node structure metadata :structure:metadata:node:
-***** { metadata node struct
-
-#+NAME: meta_emitters_metadata_function_open
-#+BEGIN_SRC d
-struct NodeStructureMetadata {
-  int lv, lv0, lv1, lv2, lv3, lv4, lv5, lv6, lv7;
-  int obj_cite_digit;
-  int[string] p_; // p_ parent_
-  static auto rgx = RgxI();
-#+END_SRC
-
-****** node metadata emitter
-
-#+NAME: meta_emitters_metadata_function_node_location
-#+BEGIN_SRC d
-@safe ObjGenericComposite node_location_emitter(La,Ta,N)(
-  string         lev_markup_number,
-  string[string] tag_in_seg,
-  La             lev_anchor_tag,
-  Ta             tag_assoc,
-  N              obj_cite_digits,
-  int            cntr_,
-  int            ptr_,
-  string         is_
-) {
-  debug(asserts) {
-    static assert(is(typeof(obj_cite_digits.object_number) == int));
-  }
-  assert(is_ != "heading");
-  assert(obj_cite_digits.object_number.to!int >= 0);
-  assert(is_ != "heading");                          // should not be necessary
-  assert(obj_cite_digits.object_number.to!int >= 0); // should not be necessary
-  if (lv7 > eN.bi.off) {
-    p_["lev_markup_number"]                       = DocStructMarkupHeading.h_text_4;
-    p_["object_number"]                           = lv7;
-  } else if (lv6 > eN.bi.off) {
-    p_["lev_markup_number"]                       = DocStructMarkupHeading.h_text_3;
-    p_["object_number"]                           = lv6;
-  } else if (lv5 > eN.bi.off) {
-    p_["lev_markup_number"]                       = DocStructMarkupHeading.h_text_2;
-    p_["object_number"]                           = lv5;
-  } else {
-    p_["lev_markup_number"]                       = DocStructMarkupHeading.h_text_1;
-    p_["object_number"]                           = lv4;
-  }
-  ObjGenericComposite comp_obj_location;
-  comp_obj_location                               = comp_obj_location.init;
-  comp_obj_location.metainfo.is_a                 = is_;
-  comp_obj_location.metainfo.ocn                  = obj_cite_digits.object_number;
-  comp_obj_location.metainfo.identifier           = obj_cite_digits.identifier;
-  comp_obj_location.tags.anchor_tag_html          = tag_in_seg["seg_lv4"];
-  comp_obj_location.tags.segment_anchor_tag_epub  = tag_in_seg["seg_lv1to4"];
-  comp_obj_location.tags.heading_lev_anchor_tag   = lev_anchor_tag;
-  comp_obj_location.metainfo.parent_ocn           = p_["object_number"];
-  comp_obj_location.metainfo.parent_lev_markup    = p_["lev_markup_number"];
-  debug(_node) {
-    if (lev_markup_number.match(rgx.levels_numbered_headings)) {
-      writeln("x ", _node.to!string);
-    } else {
-      writeln("- ", _node.to!string);
-    }
-  }
-  assert(comp_obj_location.metainfo.parent_lev_markup >= 4);
-  assert(comp_obj_location.metainfo.parent_lev_markup <= 7);
-  assert(comp_obj_location.metainfo.parent_ocn >= 0);
-  return comp_obj_location;
-}
-invariant() {
-}
-#+END_SRC
-
-****** node metadata emitter heading, (including most segnames & their pointers)
-
-#+NAME: meta_emitters_metadata_function_heading
-#+BEGIN_SRC d
-@safe ObjGenericComposite node_emitter_heading(Hd,TaL,TA,N,fNr,fNs,fL)(
-  string         _text,
-  string         lev_markup_number,
-  string         lev_collapsed_number,
-  Hd             dummy_heading_status,
-  string[string] tag_in_seg,
-  TaL            lev_anchor_tag,
-  TA             tag_assoc,
-  N              obj_cite_digits,
-  int            cntr_,
-  int            ptr_,
-  string[]       lv_ancestors_txt,
-  string         is_,
-  int            html_segnames_ptr,
-  fNr            flag_notes_reg,
-  fNs            flag_notes_star,
-  fL             flag_links,
-) {
-  debug(asserts) {
-    static assert(is(typeof(lev)                                       == string));
-    static assert(is(typeof(obj_cite_digits.object_number)             == int));
-  }
-  assert(is_ == "heading");
-  assert((obj_cite_digits.object_number).to!int >= 0);
-  assert(
-    lev_markup_number.match(rgx.levels_numbered),
-    ("not a valid heading level: " ~ lev_markup_number ~ " at " ~ obj_cite_digits.object_number.to!string)
-  );
-  if (lev_markup_number.match(rgx.levels_numbered)) {
-    if (lev_markup_number.to!int == 0) {
-      /+ TODO first hit (of two) with this assertion failure, check, fix & reinstate
-      assert(obj_cite_digits.object_number.to!int == 1,
-        "ERROR header lev markup number is: " ~
-        lev_markup_number.to!string ~
-        " obj_cite_digits.object_number.to!int should == 1 but is: " ~
-         obj_cite_digits.object_number.to!string ~
-        "\n" ~ _text);
-      +/
-    }
-  }
-  switch (lev_markup_number.to!int) {
-  case 0:
-    lv = DocStructMarkupHeading.h_sect_A;
-    lv0 = obj_cite_digit;
-    lv1 = 0; lv2 = 0; lv3 = 0; lv4 = 0; lv5 = 0; lv6 = 0; lv7 = 0;
-    p_["lev_markup_number"] = 0;
-    p_["object_number"] = 0;
-    break;
-  case 1:
-    lv = DocStructMarkupHeading.h_sect_B;
-    lv1 = obj_cite_digit;
-    lv2 = 0; lv3 = 0; lv4 = 0; lv5 = 0; lv6 = 0; lv7 = 0;
-    p_["lev_markup_number"]
-      = DocStructMarkupHeading.h_sect_A;
-    p_["object_number"] = lv0;
-    break;
-  case 2:
-    lv = DocStructMarkupHeading.h_sect_C;
-    lv2 = obj_cite_digit;
-    lv3 = 0; lv4 = 0; lv5 = 0; lv6 = 0; lv7 = 0;
-    p_["lev_markup_number"]
-      = DocStructMarkupHeading.h_sect_B;
-    p_["object_number"] = lv1;
-    break;
-  case 3:
-    lv = DocStructMarkupHeading.h_sect_D;
-    lv3 = obj_cite_digit;
-    lv4 = 0; lv5 = 0; lv6 = 0; lv7 = 0;
-    p_["lev_markup_number"]
-      = DocStructMarkupHeading.h_sect_C;
-    p_["object_number"] = lv2;
-    break;
-  case 4:
-    lv = DocStructMarkupHeading.h_text_1;
-    lv4 = obj_cite_digit;
-    lv5 = 0; lv6 = 0; lv7 = 0;
-    if (lv3 > eN.bi.off) {
-      p_["lev_markup_number"]
-        = DocStructMarkupHeading.h_sect_D;
-      p_["object_number"] = lv3;
-    } else if (lv2 > eN.bi.off) {
-      p_["lev_markup_number"]
-        = DocStructMarkupHeading.h_sect_C;
-      p_["object_number"] = lv2;
-    } else if (lv1 > eN.bi.off) {
-      p_["lev_markup_number"]
-        = DocStructMarkupHeading.h_sect_B;
-      p_["object_number"] = lv1;
-    } else {
-      p_["lev_markup_number"]
-        = DocStructMarkupHeading.h_sect_A;
-      p_["object_number"] = lv0;
-    }
-    break;
-  case 5:
-    lv = DocStructMarkupHeading.h_text_2;
-    lv5 = obj_cite_digit;
-    lv6 = 0; lv7 = 0;
-    p_["lev_markup_number"]
-      = DocStructMarkupHeading.h_text_1;
-    p_["object_number"] = lv4;
-    break;
-  case 6:
-    lv = DocStructMarkupHeading.h_text_3;
-    lv6 = obj_cite_digit;
-    lv7 = 0;
-    p_["lev_markup_number"]
-      = DocStructMarkupHeading.h_text_2;
-    p_["object_number"] = lv5;
-    break;
-  case 7:
-    lv = DocStructMarkupHeading.h_text_4;
-    lv7 = obj_cite_digit;
-    p_["lev_markup_number"]
-      = DocStructMarkupHeading.h_text_3;
-    p_["object_number"] = lv6;
-    break;
-  default:
-    break;
-  }
-  ObjGenericComposite _comp_obj_heading_;
-  _comp_obj_heading_                                        = _comp_obj_heading_.init;
-  _comp_obj_heading_.metainfo.is_of_part                    = "body";
-  _comp_obj_heading_.metainfo.is_of_section                 = "body";
-  _comp_obj_heading_.metainfo.is_of_type                    = "para";
-  _comp_obj_heading_.metainfo.is_a                          = "heading";
-  _comp_obj_heading_.text                                   = _text.to!string.strip;
-  _comp_obj_heading_.metainfo.ocn                           = obj_cite_digits.object_number;
-  _comp_obj_heading_.metainfo.identifier                    = obj_cite_digits.identifier;
-  _comp_obj_heading_.metainfo.dummy_heading                 = (dummy_heading_status == "t") ? true: false;
-  _comp_obj_heading_.metainfo.object_number_off             = obj_cite_digits.off;
-  // _comp_obj_heading_.metainfo.o_n_book_index             = obj_cite_digits.bkidx;
-  _comp_obj_heading_.metainfo.object_number_type            = obj_cite_digits.type;
-  _comp_obj_heading_.tags.segment_anchor_tag_epub           = tag_in_seg["seg_lv1to4"];
-  _comp_obj_heading_.tags.anchor_tag_html                   = tag_in_seg["seg_lv4"];
-  _comp_obj_heading_.tags.in_segment_html                   = _comp_obj_heading_.tags.anchor_tag_html;
-  _comp_obj_heading_.tags.heading_lev_anchor_tag            = lev_anchor_tag;
-  _comp_obj_heading_.tags.html_segment_anchor_tag_is        = tag_in_seg["seg_lv4"];
-  _comp_obj_heading_.tags.epub_segment_anchor_tag_is        = tag_in_seg["seg_lv1to4"];
-  _comp_obj_heading_.metainfo.heading_lev_markup            = (!(lev_markup_number.empty) ? lev_markup_number.to!int : 0);
-  _comp_obj_heading_.metainfo.heading_lev_collapsed         = (!(lev_collapsed_number.empty) ? lev_collapsed_number.to!int : 0);
-  _comp_obj_heading_.metainfo.parent_ocn                    = p_["object_number"];
-  _comp_obj_heading_.metainfo.parent_lev_markup             = p_["lev_markup_number"];
-  _comp_obj_heading_.tags.heading_ancestors_text            = lv_ancestors_txt;
-  _comp_obj_heading_.ptr.doc_object                         = cntr_;
-  _comp_obj_heading_.ptr.html_segnames                      = ((lev_markup_number == "4") ? html_segnames_ptr : 0);
-  _comp_obj_heading_.ptr.heading                            = ptr_;
-  _comp_obj_heading_.has.inline_notes_reg                   = flag_notes_reg;
-  _comp_obj_heading_.has.inline_notes_star                  = flag_notes_star;
-  _comp_obj_heading_.has.inline_links                       = flag_links;
-  tag_assoc[_comp_obj_heading_.tags.anchor_tag_html]["seg_lv4"]            = _comp_obj_heading_.tags.in_segment_html;
-  tag_assoc[_comp_obj_heading_.tags.segment_anchor_tag_epub]["seg_lv1to4"] = _comp_obj_heading_.tags.segment_anchor_tag_epub;
-  debug(_node) {
-    if (lev_markup_number.match(rgx.levels_numbered_headings)) {
-      writeln("* ", _node.to!string);
-    }
-  }
-  debug(nodeheading) {
-    if (lev_markup_number.match(rgx.levels_numbered_headings)) {
-      writeln("* ", _node.to!string);
-    }
-  }
-  assert(_comp_obj_heading_.metainfo.parent_lev_markup <= 7);
-  assert(_comp_obj_heading_.metainfo.parent_ocn >= 0);
-  if (lev_markup_number.match(rgx.levels_numbered_headings)) {
-    assert(_comp_obj_heading_.metainfo.heading_lev_markup <= 7);
-    assert(_comp_obj_heading_.metainfo.ocn >= 0);
-    if (_comp_obj_heading_.metainfo.parent_lev_markup > 0) {
-      assert(_comp_obj_heading_.metainfo.parent_lev_markup < _comp_obj_heading_.metainfo.heading_lev_markup);
-      if (_comp_obj_heading_.metainfo.ocn != 0) {
-        assert(_comp_obj_heading_.metainfo.parent_ocn < _comp_obj_heading_.metainfo.ocn);
-      }
-    }
-    if (_comp_obj_heading_.metainfo.heading_lev_markup == 0) {
-      assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_sect_A);
-    } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_sect_B) {
-      assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_sect_A);
-    } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_sect_C) {
-      assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_sect_B);
-    } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_sect_D) {
-      assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_sect_C);
-    } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_text_1) {
-      assert(_comp_obj_heading_.metainfo.parent_lev_markup <= DocStructMarkupHeading.h_sect_D);
-    } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_text_2) {
-      assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_text_1);
-    } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_text_3) {
-      assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_text_2);
-    } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_text_4) {
-      assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_text_3);
-    } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_text_5) {
-    }
-  }
-  return _comp_obj_heading_;
-}
-invariant() {
-}
-#+END_SRC
-
-***** }
-
-#+NAME: meta_emitters_metadata_function_close
-#+BEGIN_SRC d
-}
-#+END_SRC
-
-*** function assertions :assertions:
-**** assertions on markup document structure :doc_structure:
-
-#+NAME: abs_functions_assertions
-#+BEGIN_SRC d
-@safe pure void assertions_doc_structure()(
-  string[string]  an_object,
-  int[string]     lv
-) {
-  if (lv["h3"] > eN.bi.off) {
-    assert(lv["h0"] > eN.bi.off);
-    assert(lv["h1"] > eN.bi.off);
-    assert(lv["h2"] > eN.bi.off);
-  } else if (lv["h2"] > eN.bi.off) {
-    assert(lv["h0"] > eN.bi.off);
-    assert(lv["h1"] > eN.bi.off);
-    assert(lv["h3"] == eN.bi.off);
-  } else if (lv["h1"] > eN.bi.off) {
-    assert(lv["h0"] > eN.bi.off);
-    assert(lv["h2"] == eN.bi.off);
-    assert(lv["h3"] == eN.bi.off);
-  } else if (lv["h0"] > eN.bi.off) {
-    assert(lv["h1"] == eN.bi.off);
-    assert(lv["h2"] == eN.bi.off);
-    assert(lv["h3"] == eN.bi.off);
-  } else {
-    assert(lv["h0"] == eN.bi.off);
-    assert(lv["h1"] == eN.bi.off);
-    assert(lv["h2"] == eN.bi.off);
-    assert(lv["h3"] == eN.bi.off);
-  }
-  if (lv["h7"] > eN.bi.off) {
-    assert(lv["h4"] > eN.bi.off);
-    assert(lv["h5"] > eN.bi.off);
-    assert(lv["h6"] > eN.bi.off);
-  } else if (lv["h6"] > eN.bi.off) {
-    assert(lv["h4"] > eN.bi.off);
-    assert(lv["h5"] > eN.bi.off);
-    assert(lv["h7"] == eN.bi.off);
-  } else if (lv["h5"] > eN.bi.off) {
-    assert(lv["h4"] > eN.bi.off);
-    assert(lv["h6"] == eN.bi.off);
-    assert(lv["h7"] == eN.bi.off);
-  } else if (lv["h4"] > eN.bi.off) {
-    assert(lv["h5"] == eN.bi.off);
-    assert(lv["h6"] == eN.bi.off);
-    assert(lv["h7"] == eN.bi.off);
-  } else {
-    assert(lv["h4"] == eN.bi.off);
-    assert(lv["h5"] == eN.bi.off);
-    assert(lv["h6"] == eN.bi.off);
-    assert(lv["h7"] == eN.bi.off);
-  }
-  if (lv["h0"] == eN.bi.off) {
-    assert(lv["h1"] == eN.bi.off);
-    assert(lv["h2"] == eN.bi.off);
-    assert(lv["h3"] == eN.bi.off);
-    assert(lv["h4"] == eN.bi.off);
-    assert(lv["h5"] == eN.bi.off);
-    assert(lv["h6"] == eN.bi.off);
-    assert(lv["h7"] == eN.bi.off);
-  }
-  if (lv["h1"] == eN.bi.off) {
-    assert(lv["h2"] == eN.bi.off);
-    assert(lv["h3"] == eN.bi.off);
-  }
-  if (lv["h2"] == eN.bi.off) {
-    assert(lv["h3"] == eN.bi.off);
-  }
-  if (lv["h3"] == eN.bi.off) {
-  }
-  if (lv["h4"] == eN.bi.off) {
-    assert(lv["h5"] == eN.bi.off);
-    assert(lv["h6"] == eN.bi.off);
-    assert(lv["h7"] == eN.bi.off);
-  }
-  if (lv["h5"] == eN.bi.off) {
-    assert(lv["h6"] == eN.bi.off);
-    assert(lv["h7"] == eN.bi.off);
-  }
-  if (lv["h6"] == eN.bi.off) {
-    assert(lv["h7"] == eN.bi.off);
-  }
-  if (lv["h7"] == eN.bi.off) {
-  }
-  switch ((an_object["lev"]).to!string) {
-  case "A":
-    if (lv["h0"] == eN.bi.off) {
-      assert(lv["h1"] == eN.bi.off);
-      assert(lv["h2"] == eN.bi.off);
-      assert(lv["h3"] == eN.bi.off);
-      assert(lv["h4"] == eN.bi.off);
-      assert(lv["h5"] == eN.bi.off);
-      assert(lv["h6"] == eN.bi.off);
-      assert(lv["h7"] == eN.bi.off);
-    } else {                       // (lv["h0"] > eN.bi.off)
-      assert(lv["h0"] == eN.bi.off,"error should not enter level A a second time");
-    }
-    break;
-  case "B":
-    if (lv["h1"] == eN.bi.off) {
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h2"] == eN.bi.off);
-      assert(lv["h3"] == eN.bi.off);
-    } else {                       // (lv["h1"] > eN.bi.off)
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h1"] > eN.bi.off);
-    }
-    break;
-  case "C":
-    if (lv["h2"] == eN.bi.off) {
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h1"] > eN.bi.off);
-      assert(lv["h3"] == eN.bi.off);
-    } else {                       // (lv["h2"] > eN.bi.off)
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h1"] > eN.bi.off);
-      assert(lv["h2"] > eN.bi.off);
-    }
-    break;
-  case "D":
-    if (lv["h3"] == eN.bi.off) {
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h1"] > eN.bi.off);
-      assert(lv["h2"] > eN.bi.off);
-    } else {                      // (lv["h3"] > eN.bi.off)
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h1"] > eN.bi.off);
-      assert(lv["h2"] > eN.bi.off);
-      assert(lv["h3"] > eN.bi.off);
-    }
-    break;
-  case "1":
-    if (lv["h4"] == eN.bi.off) {
-      assert(lv["h0"] > eN.bi.off);
-    } else {                      // (lv["h4"] > eN.bi.off)
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h4"] > eN.bi.off);
-    }
-    break;
-  case "2":
-    if (lv["h5"] == eN.bi.off) {
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h4"] > eN.bi.off);
-    } else {                      // (lv["h5"] > eN.bi.off)
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h4"] > eN.bi.off);
-      assert(lv["h5"] > eN.bi.off);
-    }
-    break;
-  case "3":
-    if (lv["h6"] == eN.bi.off) {
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h4"] > eN.bi.off);
-      assert(lv["h5"] > eN.bi.off);
-    } else {                      // (lv["h6"] > eN.bi.off)
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h4"] > eN.bi.off);
-      assert(lv["h5"] > eN.bi.off);
-      assert(lv["h6"] > eN.bi.off);
-    }
-    break;
-  case "4":
-    if (lv["h7"] == eN.bi.off) {
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h4"] > eN.bi.off);
-      assert(lv["h5"] > eN.bi.off);
-      assert(lv["h6"] > eN.bi.off);
-    } else {                      // (lv["h7"] > eN.bi.off)
-      assert(lv["h0"] > eN.bi.off);
-      assert(lv["h4"] > eN.bi.off);
-      assert(lv["h5"] > eN.bi.off);
-      assert(lv["h6"] > eN.bi.off);
-      assert(lv["h7"] > eN.bi.off);
-    }
-    break;
-  default:
-    break;
-  }
-}
-#+END_SRC
-
-*** doc sect keys seq
-
-#+NAME: template_doc_sect_keys_seq
-#+BEGIN_SRC d
-template docSectKeysSeq() {
-  @safe auto docSectKeysSeq(string[][string] document_section_keys_sequenced) {
-    struct doc_sect_keys_seq {
-      string[] scroll() {
-        return document_section_keys_sequenced["scroll"];
-      }
-      string[] seg() {
-        return document_section_keys_sequenced["seg"];
-      }
-      string[] sql() {
-        return document_section_keys_sequenced["sql"];
-      }
-      string[] latex() {
-        return document_section_keys_sequenced["latex"];
-      }
-    }
-    return doc_sect_keys_seq();
-  }
-}
-#+END_SRC
-
-* 2. Object Setter (Set Abstract Object) :module:spine:metadoc_object_setter:
-
-set abstracted objects for downstream processing
-
-** _module template_
-
-#+HEADER: :tangle "../src/doc_reform/meta/metadoc_object_setter.d"
-#+HEADER: :noweb yes
-#+BEGIN_SRC d
-<<doc_header_including_copyright_and_license>>
-/++
-  object setter:
-  setting of sisu objects for downstream processing
-  metadoc_object_setter.d
-+/
-module doc_reform.meta.metadoc_object_setter;
-template ObjectSetter() {
-  /+ structs +/
-  <<meta_structs_init_docObj_metainfo>>
-  <<meta_structs_init_docObj_txtAttrib>>
-  <<meta_structs_init_docObj_has>>
-  <<meta_structs_init_docObj_table>>
-  <<meta_structs_init_docObj_code_block>>
-  <<meta_structs_init_docObj_stow>>
-  <<meta_structs_init_docObj_pointer>>
-  <<meta_structs_init_docObj_tags>>
-  <<meta_structs_init_docObj_composite>>
-  <<meta_structs_init_docObj_theObjects>>
-}
-#+END_SRC
-
-** 1. initialize structs :struct:
-*** heading attribute
-
-#+BEGIN_SRC d
-struct HeadingAttrib {
-  string lev                                    = "9";
-  int    heading_lev_markup                     = 9;
-  int    heading_lev_collapsed                  = 9;
-  int[]  closes_lev_collapsed                   = [];
-  int[]  closes_lev_markup                      = [];
-  int    array_ptr                              = 0;
-  int    heading_array_ptr_segments             = 0;
-}
-#+END_SRC
-
-*** _composite object_ [#A]
-
-#+NAME: meta_structs_init_docObj_metainfo
-#+BEGIN_SRC d
-struct DocObj_MetaInfo_ {
-  string                 is_of_part                           = ""; // frontmatter, body, backmatter
-  string                 is_of_section                        = ""; // toc, body, glossary, biography, book index, blurb
-  string                 is_of_type                           = ""; // para, block ?
-  string                 is_a                                 = ""; // heading, para, table, code block, group, verse/poem ...
-  alias                  of_part                              = is_of_part;
-  alias                  of_section                           = is_of_section;
-  alias                  is_of                                = is_of_type;
-  string                 attrib                               = "";
-  string                 lang                                 = ""; // blocks: group, block, quote; not codeblock;
-  string                 syntax                               = ""; // codeblock only
-  /+ o_n +/
-  int                    o_n_substantive                      = 0;
-  int                    o_n_non_substantive                  = 0;
-  int                    o_n_glossary                         = 0;
-  int                    o_n_bibliography                     = 0;
-  int                    o_n_book_index                       = 0;
-  int                    o_n_blurb                            = 0;
-  @safe  string object_number_substantive() const @property {
-    return (o_n_substantive == 0) ? "" : o_n_substantive.to!string;
-  }
-  @safe string object_number_non_substantive() const @property {
-    return (o_n_non_substantive == 0) ? "" : o_n_non_substantive.to!string;
-  }
-  @safe string object_number_glossary() const @property {
-    return (o_n_glossary == 0) ? "" : o_n_glossary.to!string;
-  }
-  @safe string object_number_bibliography() const @property {
-    return (o_n_bibliography == 0) ? "" : o_n_bibliography.to!string;
-  }
-  @safe string object_number_book_index() const @property {
-    return (o_n_book_index == 0) ? "" : o_n_book_index.to!string;
-  }
-  @safe string object_number_blurb() const @property {
-    return (o_n_blurb == 0) ? "" : o_n_blurb.to!string;
-  }
-  bool                   object_number_off                    = false;
-  bool                   visible_object_number                = false;
-  int                    object_number_type                   = 0; // { ocn, non, bkidx }
-  /+ node +/
-  string[string][string] node;
-  int                    ocn                                  = 0;
-  string                 identifier                           = "";
-  @safe string object_number() const @property {
-    return (ocn == 0) ? "" : ocn.to!string;
-  }
-  int                    o_n_type                             = 0;
-  int                    heading_lev_markup                   = 9;
-  int                    heading_lev_collapsed                = 9;
-  @safe string marked_up_level() const @property {
-    string _out;
-    switch (heading_lev_markup) {
-    case 0  : _out = "A"; break;
-    case 1  : _out = "B"; break;
-    case 2  : _out = "C"; break;
-    case 3  : _out = "D"; break;
-    case 4  : _out = "1"; break;
-    case 5  : _out = "2"; break;
-    case 6  : _out = "3"; break;
-    case 7  : _out = "4"; break;
-    default : _out = "";  break; // "9";
-    }
-    return _out;
-  }
-  bool                   dummy_heading                        = false;
-  int[]                  markedup_ancestors                   = [ 0, 0, 0, 0, 0, 0, 0, 0,];
-  int[]                  collapsed_ancestors                  = [ 0, 0, 0, 0, 0, 0, 0, 0,];
-  int[]                  dom_structure_markedup_tags_status   = [ 0, 0, 0, 0, 0, 0, 0, 0,];
-  int[]                  dom_structure_collapsed_tags_status  = [ 0, 0, 0, 0, 0, 0, 0, 0,];
-  int                    parent_lev_markup                    = 0;
-  int                    parent_ocn                           = 0;
-  int                    last_decendant_ocn                   = 0;
-}
-#+END_SRC
-
-**** object text attributes
-
-#+NAME: meta_structs_init_docObj_txtAttrib
-#+BEGIN_SRC d
-struct DocObj_TxtAttrib_ {
-  int                    indent_base                         = 0;
-  int                    indent_hang                         = 0;
-  bool                   bullet                              = false;
-  string                 language                            = "";
-}
-#+END_SRC
-
-**** object has within it
-
-#+NAME: meta_structs_init_docObj_has
-#+BEGIN_SRC d
-struct DocObj_Has_ {
-  bool                   inline_links                        = false;
-  bool                   inline_notes_reg                    = false;
-  bool                   inline_notes_star                   = false;
-  bool                   images                              = false;
-  bool                   image_without_dimensions            = false;
-}
-#+END_SRC
-
-**** table attributes
-
-#+NAME: meta_structs_init_docObj_table
-#+BEGIN_SRC d
-struct DocObj_Table_ {
-  int                    number_of_columns                   = 0;
-  double[]               column_widths                       = [];
-  string[]               column_aligns                       = [];
-  bool                   heading                             = false;
-  bool                   walls                               = false;
-}
-#+END_SRC
-
-**** code attributes
-
-#+NAME: meta_structs_init_docObj_code_block
-#+BEGIN_SRC d
-struct DocObj_CodeBlock_ {
-  string                 syntax                              = "";
-  bool                   linenumbers                         = false;
-}
-#+END_SRC
-
-**** stow (things to be protected from regular text transformations, so far links)
-
-#+NAME: meta_structs_init_docObj_stow
-#+BEGIN_SRC d
-struct DocObj_Stow_ {
-  string[]               link                               = [];
-}
-#+END_SRC
-
-**** pointers
-
-#+NAME: meta_structs_init_docObj_pointer
-#+BEGIN_SRC d
-struct DocObj_Pointer_ {
-  int                    doc_object                          = 0;
-  int                    html_segnames                       = 0;
-  int                    heading                             = 0;
-}
-#+END_SRC
-
-**** tags
-
-#+NAME: meta_structs_init_docObj_tags
-#+BEGIN_SRC d
-struct DocObj_Tags_ {
-  string[]               heading_ancestors_text              = [ "", "", "", "", "", "", "", "", ];
-  string                 anchor_tag_html                     = "";
-  string                 in_segment_html                     = "";
-  string                 segment_anchor_tag_epub             = "";
-  string                 html_segment_anchor_tag_is          = "";
-  string                 epub_segment_anchor_tag_is          = "";
-  string                 heading_lev_anchor_tag              = "";
-  string                 segname_prev                        = "";
-  string                 segname_next                        = "";
-  string[]               lev4_subtoc                         = [];
-  string[]               anchor_tags                         = [];
-}
-#+END_SRC
-
-**** composite object the parts
-
-#+NAME: meta_structs_init_docObj_composite
-#+BEGIN_SRC d
-struct ObjGenericComposite {
-  string                 text                                = "";
-  DocObj_MetaInfo_       metainfo;
-  DocObj_TxtAttrib_      attrib;
-  DocObj_Tags_           tags;
-  DocObj_Has_            has;
-  DocObj_Table_          table;
-  DocObj_CodeBlock_      code_block;
-  DocObj_Stow_           stow;
-  DocObj_Pointer_        ptr;
-}
-#+END_SRC
-
-*** The Objects: generic composite object array
-
-#+NAME: meta_structs_init_docObj_theObjects
-#+BEGIN_SRC d
-struct TheObjects {
-  ObjGenericComposite[] oca;
-}
-#+END_SRC
-
-* document header including copyright & license
-
-#+NAME: doc_header_including_copyright_and_license
-#+BEGIN_SRC text
-/+
-- Name: Spine, Doc Reform [a part of]
-  - Description: documents, structuring, processing, publishing, search
-    - static content generator
-
-  - Author: Ralph Amissah
-    [ralph.amissah@gmail.com]
-
-  - Copyright: (C) 2015 - 2023 Ralph Amissah, All Rights Reserved.
-
-  - License: AGPL 3 or later:
-
-    Spine (SiSU), a framework for document structuring, publishing and
-    search
-
-    Copyright (C) Ralph Amissah
-
-    This program is free software: you can redistribute it and/or modify it
-    under the terms of the GNU AFERO General Public License as published by the
-    Free Software Foundation, either version 3 of the License, or (at your
-    option) any later version.
-
-    This program is distributed in the hope that it will be useful, but WITHOUT
-    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-    FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
-    more details.
-
-    You should have received a copy of the GNU General Public License along with
-    this program. If not, see [https://www.gnu.org/licenses/].
-
-    If you have Internet connection, the latest version of the AGPL should be
-    available at these locations:
-    [https://www.fsf.org/licensing/licenses/agpl.html]
-    [https://www.gnu.org/licenses/agpl.html]
-
-  - Spine (by Doc Reform, related to SiSU) uses standard:
-    - docReform markup syntax
-      - standard SiSU markup syntax with modified headers and minor modifications
-    - docReform object numbering
-      - standard SiSU object citation numbering & system
-
-  - Homepages:
-    [https://www.doc_reform.org]
-    [https://www.sisudoc.org]
-
-  - Git
-    [https://git.sisudoc.org/projects/?p=software/spine.git;a=summary]
-
-+/
-#+END_SRC
-
-* __END__