v4: merge v5, syntax additions, block text related (version bump to 4.2.*)

* syntax add
  * switch ocn off and on for a block of content, line containing only
    off: "--~#" (omit headings where possible) "---#" on: "--+#"
  * alternative open and close for blocks using line starting with "```", e.g.
    open code block:  "``` code"; close code block: "```"
    start poem:       "``` poem"; end poem:         "```"
  * remove need for an empty line between opening & closing of a text block
  [ note further refinements will be required;
    use of tildes "~~" considered but more problematic, tics not used elsewhere]

7 files changed, 414 insertions, 255 deletions

diff --git a/lib/sisu/v4/dal.rb b/lib/sisu/v4/dal.rb
index 4a158fb6..ca2429b1 100644
--- a/lib/sisu/v4/dal.rb
+++ b/lib/sisu/v4/dal.rb
@@ -78,7 +78,7 @@ module SiSU_DAL
   require_relative 'dal_images'                         # dal_images.rb
   require_relative 'dal_metadata'                       # dal_metadata.rb
   require_relative 'dal_character_check'                # dal_character_check.rb
-  require_relative 'dal_substitutions_and_insertions'   # dal_substitutions_and_insertions.rb
+  require_relative 'dal_misc_arrange'                   # dal_misc_arrange.rb
   require_relative 'dal_expand_insertions'              # dal_expand_insertions.rb
   require_relative 'prog_text_translation'              # prog_text_translation.rb
   require_relative 'shared_sem'                         # shared_sem.rb
@@ -479,7 +479,7 @@ module SiSU_DAL
       reset
       data=@data
       data=SiSU_DAL_Insertions::Insertions.new(@md,data).expand_insertions?                                              # dal_expand_insertions.rb
-      data=SiSU_DAL_SubstituteAndInsert::SI.new(@md,data).substitutions_and_insertions?                                  # dal_substitutions_and_insertions.rb
+      data=SiSU_DAL_MiscArrangeText::SI.new(@md,data).prepare_text                                                       # dal_misc_arrange.rb
       data,metadata=SiSU_DAL_DocumentStructureExtract::Build.new(@md,data).identify_parts                                # dal_doc_str.rb
       data=SiSU_DAL_Syntax::Markup.new(@md,data).songsheet                                                               # dal_syntax.rb
       data,endnote_array=SiSU_DAL_CharacterCheck::Check.new(data).character_check_and_oldstyle_endnote_array             # dal_character_check.rb
diff --git a/lib/sisu/v4/dal_doc_objects.rb b/lib/sisu/v4/dal_doc_objects.rb
index 12441156..8fdd8068 100644
--- a/lib/sisu/v4/dal_doc_objects.rb
+++ b/lib/sisu/v4/dal_doc_objects.rb
@@ -423,6 +423,33 @@ module SiSU_DAL_DocumentStructure
       self
     end
   end
+  class ObjectFlag
+    attr_accessor :obj,:is,:of,:flag,:mod,:tmp
+    def initialize
+      @of=:flag
+      @is=@obj=@flag=@mod=@tmp=nil
+    end
+    def flag(h,o=nil)
+      of=     @of                                                              #String, classification - group
+      is=     :flag                                                            #String, classification - specific type
+      obj=    nil                                                              #String, text content
+      flag=   h[:flag]     || ((defined? o.flag)      ? o.flag    : nil)       #String, text content
+      mod=    h[:mod]      || ((defined? o.mod)       ? o.mod     : nil)       #String, text content
+      tmp=    h[:flag]     || ((defined? o.tmp)       ? o.tmp     : nil)       #available for processing, empty after use
+      @of,@is,@obj,@flag,@mod,@tmp=of,is,obj,flag,mod,tmp
+      self
+    end
+    def flag_ocn(h,o=nil)
+      of=     @of                                                              #String, classification - group
+      is=     :flag_ocn                                                        #String, classification - specific type
+      obj=    nil                                                              #String, text content
+      flag=   h[:flag]     || ((defined? o.flag)      ? o.flag    : nil)       #String, text content
+      mod=    h[:mod]      || ((defined? o.mod)       ? o.mod     : nil)       #String, text content
+      tmp=    h[:flag]     || ((defined? o.tmp)       ? o.tmp     : nil)       #available for processing, empty after use
+      @of,@is,@obj,@flag,@mod,@tmp=of,is,obj,flag,mod,tmp
+      self
+    end
+  end
   class ObjectLayout
     attr_accessor :obj,:is,:of,:from,:tmp
     def initialize
diff --git a/lib/sisu/v4/dal_doc_str.rb b/lib/sisu/v4/dal_doc_str.rb
index 1eeae2da..6c588a8a 100644
--- a/lib/sisu/v4/dal_doc_str.rb
+++ b/lib/sisu/v4/dal_doc_str.rb
@@ -61,15 +61,32 @@
 =end
 module SiSU_DAL_DocumentStructureExtract
   class Instantiate < SiSU_Param::Parameters::Instructions
-    @@flag={} #Beware!!
+    @@flag={
+      ocn:      :on,
+      code:     :off,
+      poem:     :off,
+      block:    :off,
+      group:    :off,
+      alt:      :off,
+      table:    :off,
+      table_to: :off,
+    }
     def initialize
-      @@flag['table_to']=false
       @@counter=@@column=@@columns=0
       @@line_mode=''
     end
   end
   class Build
-    @@flag={} #Beware!!
+    @@flag={
+      ocn:      :on,
+      code:     :off,
+      poem:     :off,
+      block:    :off,
+      group:    :off,
+      alt:      :off,
+      table:    :off,
+      table_to: :off,
+    }
     def initialize(md,data)
       @md,@data=md,data
       SiSU_DAL_DocumentStructureExtract::Instantiate.new
@@ -157,14 +174,33 @@ module SiSU_DAL_DocumentStructureExtract
       @@counter,@verse_count=0,0
       @metadata={}
       @data.each do |t_o|
-        t_o=t_o.gsub(/(?:\n\s*\n)+/m,"\n") unless @@flag['code']
+        if t_o =~/^--([+~-])[#]$/
+          h=case $1
+          when /[+]/
+            @@flag[:ocn]=:on
+            {flag: :ocn_on}
+          when /[~]/
+            @@flag[:ocn]=:off_headings_substantive
+            {flag: :ocn_off, mod: :headings_substantive}
+          when /[-]/
+            @@flag[:ocn]=:off_headings_exclude
+            {flag: :ocn_off, mod: :headings_exclude}
+          else
+            @@flag[:ocn]=:on
+            {flag: :ocn_on}
+          end
+          t_o=SiSU_DAL_DocumentStructure::ObjectFlag.new.flag_ocn(h)
+          next
+        end
+        t_o=t_o.gsub(/(?:\n\s*\n)+/m,"\n") if @@flag[:code]==:off
         if t_o !~/^(?:code|poem|alt|group|block)\{|^\}(?:code|poem|alt|group|block)|^(?:table\{|\{table)[ ~]/ \
-        and not @@flag['code'] \
-        and not @@flag['poem'] \
-        and not @@flag['group'] \
-        and not @@flag['block'] \
-        and not @@flag['alt'] \
-        and not @@flag['table']
+        and t_o !~/^[`]{3}\s+(?:code|poem|alt|group|block)|^[`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?\s*$/ \
+        and @@flag[:code]==:off \
+        and @@flag[:poem]==:off \
+        and @@flag[:group]==:off \
+        and @@flag[:block]==:off \
+        and @@flag[:alt]==:off \
+        and @@flag[:table]==:off
           unless t_o =~/^(?:@\S+?:|%+)\s/                  # extract book index for paragraph if any
             idx=if t_o=~/^=\{(.+)\}\s*$\Z/m; m=$1
               t_o=t_o.gsub(/\n=\{.+\}\s*$\Z/m,'')
@@ -192,18 +228,48 @@ module SiSU_DAL_DocumentStructureExtract
               obj=$1
               note=endnote_test?(obj)
               obj,tags=extract_tags(obj)
+              if @@flag[:ocn]==:off_headings_exclude \
+              or @@flag[:ocn]==:off_headings_substantive
+                unless obj =~ /[~-][#]\s*$/
+                  if @@flag[:ocn]==:off_headings_exclude
+                    obj << ' -#'
+                  elsif @@flag[:ocn]==:off_headings_substantive
+                    obj << ' ~#'
+                  end
+                end
+              end
               h={ lv: lv, ln: ln, obj: obj, idx: idx, tags: tags }
               SiSU_DAL_DocumentStructure::ObjectHeading.new.heading(h)
             elsif t_o=~/^:?[A-C1-6]\~(\S+?)-\s+(.+)/m
               name,obj=$1,$2
               note=endnote_test?(obj)
               obj,tags=extract_tags(obj)
+              if @@flag[:ocn]==:off_headings_exclude \
+              or @@flag[:ocn]==:off_headings_substantive
+                unless obj =~ /[~-][#]\s*$/
+                  if @@flag[:ocn]==:off_headings_exclude
+                    obj << ' -#'
+                  elsif @@flag[:ocn]==:off_headings_substantive
+                    obj << ' ~#'
+                  end
+                end
+              end
               h={ lv: lv, name: name, obj: obj, idx: idx, autonum_: false, tags: tags}
               SiSU_DAL_DocumentStructure::ObjectHeading.new.heading(h)
             elsif t_o=~/^:?[A-C1-6]\~(\S+)\s+(.+)/m
               name,obj=$1,$2
               note=endnote_test?(obj)
               obj,tags=extract_tags(obj,name)
+              if @@flag[:ocn]==:off_headings_exclude \
+              or @@flag[:ocn]==:off_headings_substantive
+                unless obj =~ /[~-][#]\s*$/
+                  if @@flag[:ocn]==:off_headings_exclude
+                    obj << ' -#'
+                  elsif @@flag[:ocn]==:off_headings_substantive
+                    obj << ' ~#'
+                  end
+                end
+              end
               h={ lv: lv, name: name, obj: obj, idx: idx, tags: tags }
               SiSU_DAL_DocumentStructure::ObjectHeading.new.heading(h)
             else nil
@@ -221,6 +287,12 @@ module SiSU_DAL_DocumentStructureExtract
               note=endnote_test?(obj)
               obj,tags=extract_tags(obj)
               unless obj=~/\A\s*\Z/m
+                if @@flag[:ocn]==:off_headings_exclude \
+                or @@flag[:ocn]==:off_headings_substantive
+                  unless obj =~ /[~-][#]\s*$/
+                    obj << ' ~#'
+                  end
+                end
                 h={ bullet_: bullet, hang: hang, indent: indent, obj: obj, idx: idx, note_: note, image_: image, tags: tags }
                 SiSU_DAL_DocumentStructure::ObjectPara.new.paragraph(h)
               end
@@ -238,6 +310,12 @@ module SiSU_DAL_DocumentStructureExtract
               note=endnote_test?(obj)
               obj,tags=extract_tags(obj)
               unless obj=~/\A\s*\Z/m
+                if @@flag[:ocn]==:off_headings_exclude \
+                or @@flag[:ocn]==:off_headings_substantive
+                  unless obj =~ /[~-][#]\s*$/
+                    obj << ' ~#'
+                  end
+                end
                 h={ hang: hang, indent: indent, obj: obj, idx: idx, note_: note, image_: image, tags: tags }
                 SiSU_DAL_DocumentStructure::ObjectPara.new.paragraph(h)
               end
@@ -255,44 +333,84 @@ module SiSU_DAL_DocumentStructureExtract
             image=image_test(t_o)
             note=endnote_test?(t_o)
             obj,tags=extract_tags(t_o)
+            if @@flag[:ocn]==:off_headings_exclude \
+            or @@flag[:ocn]==:off_headings_substantive
+              unless obj =~ /[~-][#]\s*$/
+                obj << ' ~#'
+              end
+            end
             unless obj=~/\A\s*\Z/m
               h={ bullet_: false, indent: 0, hang: 0, obj: obj, idx: idx, note_: note, image_: image, tags: tags }
               SiSU_DAL_DocumentStructure::ObjectPara.new.paragraph(h)
             end
           end
-        elsif not @@flag['code']
-          if t_o =~/^code\{/
-            @@flag['code']=true
+        elsif @@flag[:code]==:off
+          if t_o =~/^(?:code\{|[`]{3}\s+code)/
+            @@flag[:code]=case t_o
+            when /^code\{/;        :curls
+            when /^[`]{3}\s+code/; :tics
+            else                   @@flag[:code] #error
+            end
             @@counter=1
-            @codeblock_numbered=(t_o =~/^code\{#/) ? true : false
+            @codeblock_numbered=(t_o =~/^(?:code\{#|[`]{3}\s+code\s[#])/) ? true : false
             h={ obj: 'code block start' }                   #introduce a counter
-            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
-          elsif t_o =~/^poem\{/
-            @@flag['poem']=true
+            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
+          elsif t_o =~/^(?:poem\{|[`]{3}\s+poem)/
+            @@flag[:poem]=case t_o
+            when /^poem\{/;        :curls
+            when /^[`]{3}\s+poem/; :tics
+            else                   @@flag[:poem] #error
+            end
             h={ obj: 'poem start' }                         #introduce a counter
-            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
+            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
             tuned_file << t_o
-          elsif t_o =~/^group\{/
-            @@flag['group']=true
+          elsif t_o =~/^(?:group\{|[`]{3}\s+group)/
+            @@flag[:group]=case t_o
+            when /^group\{/;        :curls
+            when /^[`]{3}\s+group/; :tics
+            else                    @@flag[:group] #error
+            end
             h={ obj: 'group text start' }                   #introduce a counter
-            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
+            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
             tuned_file << t_o
-          elsif t_o =~/^block\{/
-            @@flag['block']=true
+          elsif t_o =~/^(?:block\{|[`]{3}\s+block)/
+            @@flag[:block]=case t_o
+            when /^block\{/;        :curls
+            when /^[`]{3}\s+block/; :tics
+            else                    @@flag[:block] #error
+            end
             h={ obj: 'block text start' }                   #introduce a counter
-            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
+            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
             tuned_file << t_o
-          elsif t_o =~/^alt\{/
-            @@flag['alt']=true
+          elsif t_o =~/^(?:alt\{|[`]{3}\s+alt)/
+            @@flag[:alt]=case t_o
+            when /^alt\{/;        :curls
+            when /^[`]{3}\s+alt/; :tics
+            else                  @@flag[:alt] #error
+            end
             h={ obj: 'alt text start' }                     #introduce a counter
-            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
+            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
             tuned_file << t_o
           elsif t_o =~/^(?:table\{|\{table)[ ~]/
             h={ obj: 'table start' }                        #introduce a counter
-            ins=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #ins=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
+            ins=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
             tuned_file << ins
             if t_o=~/^table\{(?:~h)?\s+/
-              @@flag['table']=true
+              @@flag[:table]=:curls
+              @rows=''
+              case t_o
+              when /table\{~h\s+c(\d+);\s+(.+)/
+                cols=$1
+                col=$2.scan(/\d+/)
+                heading=true
+              when /table\{\s+c(\d+);\s+(.+)/
+                cols=$1
+                col=$2.scan(/\d+/)
+                heading=false
+              end
+              @h={ head_: heading, cols: cols, widths: col, idx: idx }
+            elsif t_o=~/^[`]{3}\s+table(?:~h)?\s+/
+              @@flag[:table]=:tics
               @rows=''
               case t_o
               when /table\{~h\s+c(\d+);\s+(.+)/
@@ -361,21 +479,23 @@ module SiSU_DAL_DocumentStructureExtract
           end
           t_o
         end
-        if @@flag['table']
-          if @@flag['table'] \
-          and t_o =~/^\}table/                             #two table representations should be consolidated as one
-            @@flag['table']=false
+        if @@flag[:table]==:curls or @@flag[:table]==:tics
+          if (@@flag[:table]==:curls \
+          and t_o =~/^\}table/) \
+          or (@@flag[:table]==:tics \
+          and t_o =~/^[`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?\s*$/)
+            @@flag[:table]=:off
             headings,columns,widths,idx=@h[:head_],@h[:cols],@h[:widths],@h[:idx]
             @h={ head_: headings, cols: columns, widths: widths, idx: idx, obj: @rows }
             t_o=SiSU_DAL_DocumentStructure::ObjectTable.new.table(@h)
             tuned_file << t_o
             @h,@rows=nil,''
             h={ obj: 'table end' }                          #introduce a counter
-            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
+            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
             t_o
           else
             if t_o.is_a?(String) \
-            and t_o !~/^table\{/
+            and t_o !~/^(?:table\{|[`]{3}\s+table)/
               t_o=t_o.gsub(/^\n+/m,''). #check added for ruby 1.9.2 not needed in 1.8 series (tested in v2)
                 gsub(/\n+/m,"#{Mx[:tc_p]}")
               @rows += t_o + Mx[:tc_c]
@@ -383,9 +503,10 @@ module SiSU_DAL_DocumentStructureExtract
             t_o=nil
           end
         end
-        if @@flag['code']
-          if t_o =~/^\}code/
-            @@flag['code']=false
+        if @@flag[:code]==:curls or @@flag[:code]==:tics
+          if (@@flag[:code]==:curls and t_o =~/^\}code/) \
+          or (@@flag[:code]==:tics and t_o =~/^[`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?\s*$/)
+            @@flag[:code]=:off
             obj=@tuned_code.join("\n")
             tags=[]
             h={ obj: obj, tags: tags, number_: @codeblock_numbered }
@@ -393,66 +514,66 @@ module SiSU_DAL_DocumentStructureExtract
             @tuned_code=[]
             tuned_file << t_o
             h={ obj: 'code block end' }                     #introduce a counter
-            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
+            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
           end
-          if @@flag['code'] \
+          if (@@flag[:code]==:curls or @@flag[:code]==:tics) \
           and t_o.is_a?(String)
             sub_array=t_o.dup + "#{Mx[:br_nl]}"
-            @line_mode=sub_array.scan(/.+/)
             @line_mode=[]
             sub_array.scan(/.+/) {|w| @line_mode << w if w =~/[\S]+/}
-            t_o=SiSU_DAL_DocumentStructureExtract::Build.new(@md,@line_mode).build_lines('code').join
+            t_o=SiSU_DAL_DocumentStructureExtract::Build.new(@md,@line_mode).build_lines(:code).join
             @tuned_code << t_o
             t_o=nil
           end
-        elsif @@flag['poem'] \
-        or @@flag['group'] \
-        or @@flag['block'] \
-        or @@flag['alt']
-          if @@flag['poem'] \
-          and t_o =~/^\}poem/
-            @@flag['poem']=false
+        elsif (@@flag[:poem]==:curls or @@flag[:poem]==:tics) \
+        or (@@flag[:group]==:curls or @@flag[:group]==:tics) \
+        or (@@flag[:block]==:curls or @@flag[:block]==:tics) \
+        or (@@flag[:alt]==:curls or @@flag[:alt]==:tics)
+          if (@@flag[:poem]==:curls and t_o =~/^\}poem/) \
+          or (@@flag[:poem]==:tics and t_o =~/^[`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?\s*$/)
+            @@flag[:poem]=:off
             h={ obj: 'poem end' }                           #introduce a counter
-            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
-          elsif ( @@flag['group'] \
-          and t_o =~/^\}group/ )
-            @@flag['group']=false
+            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
+          elsif (@@flag[:group]==:curls and t_o =~/^\}group/) \
+          or (@@flag[:group]==:tics and t_o =~/^[`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?\s*$/)
+            @@flag[:group]=:off
             obj,tags=extract_tags(@tuned_block.join("\n"))
             h={ obj: obj, tags: tags }
             @tuned_block=[]
             t_o=SiSU_DAL_DocumentStructure::ObjectBlockTxt.new.group(h)
             tuned_file << t_o
             h={ obj: 'group text end' }                     #introduce a counter
-            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
-          elsif ( @@flag['block'] \
-          and t_o =~/^\}block/ )
-            @@flag['block']=false
+            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
+          elsif (@@flag[:block]==:curls and t_o =~/^\}block/) \
+          or (@@flag[:block]==:tics and t_o =~/^[`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?\s*$/)
+            @@flag[:block]=:off
             obj,tags=extract_tags(@tuned_block.join("\n"))
             h={ obj: obj, tags: tags }
             @tuned_block=[]
             t_o=SiSU_DAL_DocumentStructure::ObjectBlockTxt.new.block(h)
             tuned_file << t_o
             h={ obj: 'block text end' }                     #introduce a counter
-            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
-          elsif ( @@flag['alt'] \
-          and t_o =~/^\}alt/ )
-            @@flag['alt']=false
+            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
+          elsif (@@flag[:alt]==:curls and t_o =~/^\}alt/) \
+          or (@@flag[:alt]==:tics and t_o =~/^[`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?\s*$/)
+            @@flag[:alt]=:off
             obj,tags=extract_tags(@tuned_block.join("\n"))
             h={ obj: obj, tags: tags }
             t_o=SiSU_DAL_DocumentStructure::ObjectBlockTxt.new.alt(h)
             @tuned_block=[]
             tuned_file << t_o
             h={ obj: 'alt text end' }                       #introduce a counter
-            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DAL_DocumentStructure::ObjectLayout.new.insert(h)
+            t_o=SiSU_DAL_DocumentStructure::ObjectComment.new.comment(h)
           end
-          if @@flag['poem'] \
-          or @@flag['group'] \
-          or @@flag['alt'] \
+          if (@@flag[:poem]==:curls or @@flag[:poem]==:tics \
+          or @@flag[:group]==:curls or @@flag[:group]==:tics \
+          or @@flag[:alt]==:curls or @@flag[:alt]==:tics) \
           and t_o =~/\S/ \
-          and t_o !~/^(?:\}(?:verse|code|alt|group|block)|(?:verse|code|alt|group|block)\{)/ # fix logic
+          and t_o !~/^(?:\}(?:verse|code|alt|group|block)|(?:verse|code|alt|group|block)\{)/ \
+          and t_o !~/^[`]{3}\s+(?:code|poem|alt|group|block)|^[`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?\s*$/ # fix logic
             sub_array=t_o.dup
             @line_mode=sub_array.scan(/.+/)
-            type=if @@flag['poem']
+            type=if @@flag[:poem]==:curls or @@flag[:poem]==:tics
               t_o=SiSU_DAL_DocumentStructureExtract::Build.new(@md,@line_mode).build_lines(type).join
               poem=t_o.split(/\n\n/)
               poem.each do |v|
@@ -462,16 +583,16 @@ module SiSU_DAL_DocumentStructureExtract
                 t_o=SiSU_DAL_DocumentStructure::ObjectBlockTxt.new.verse(h)
                 tuned_file << t_o
               end
-              'poem'
-            else 'group'
+              :poem
+            else :group
             end
           end
-          @verse_count+=1 if @@flag['poem']
+          @verse_count+=1 if @@flag[:poem]==:curls or @@flag[:poem]==:tics
         end
-        if not @@flag['code']
-          if @@flag['poem'] \
-          or @@flag['group'] \
-          or @@flag['alt']
+        if @@flag[:code]==:off
+          if @@flag[:poem]==:curls or @@flag[:poem]==:tics \
+          or @@flag[:group]==:curls or @@flag[:group]==:tics \
+          or @@flag[:alt]==:curls or @@flag[:alt]==:tics
             if t_o.is_a?(String)
               t_o=t_o.gsub(/\n/m,"#{Mx[:br_nl]}").
                 gsub(/[ ][ ]/m,"#{Mx[:nbsp]*2}").
@@ -532,16 +653,17 @@ module SiSU_DAL_DocumentStructureExtract
       h={ obj: str, ocn_: false }
       SiSU_DAL_DocumentStructure::ObjectPara.new.paragraph(h)
     end
-    def build_lines(type='')
+    def build_lines(type=:none)
       lines,lines_new=@data,[]
       lines.each do |line|
         line=if line =~/\S/ \
-        and line !~/^code\{|^\}code/ \
-        and not line.is_a?(Hash)
-          @@counter+=1 if @@flag['code']
+        and line !~/^(?:code\{|\}code)/ \
+        and line !~/^(?:[`]{3}\s+code|[`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?\s*$)/ \
+        and not line.is_a?(Hash) #watch
+          @@counter+=1 if @@flag[:code]==:curls or @@flag[:code]==:tics
           line=line.gsub(/\s\s/,"#{Mx[:nbsp]*2}").
             gsub(/#{Mx[:nbsp]}\s/,"#{Mx[:nbsp]*2}")
-          line=line.gsub(/^/,"#{Mx[:gr_o]}codeline#{Mx[:gr_c]}") if type=='code' # REMOVE try sort for texpdf special case
+          line=line.gsub(/^/,"#{Mx[:gr_o]}codeline#{Mx[:gr_c]}") if type==:code # REMOVE try sort for texpdf special case
           line=if line =~/(?:https?|file|ftp):\/\/\S+$/
             line.gsub(/\s*$/," #{Mx[:br_nl]}")
           else line.gsub(/\s*$/,"#{Mx[:br_nl]}") #unless type=='code'
@@ -564,7 +686,7 @@ module SiSU_DAL_DocumentStructureExtract
       @dob
     end
     def structure_markup                                   #build structure where structure provided only in meta header
-      @dob=if @dob.is ==:para \
+      @dob=if @dob.is==:para \
       && (((@dob.hang !~/[1-9]/) && (@dob.indent !~/[1-9]/)) \
       || (@dob.hang != @dob.indent)) \
       and not @dob.bullet_
@@ -606,7 +728,7 @@ module SiSU_DAL_DocumentStructureExtract
       parent=node1=node2=node3=node4=node5=node6=nil
       data.each do |dob|
         h={}
-        if (dob.obj !~ regex_exclude_ocn_and_node || dob.is ==:code) \
+        if (dob.obj !~ regex_exclude_ocn_and_node || dob.is==:code) \
         && (dob.of !=:comment \
         && dob.of !=:layout \
         && dob.of !=:meta) \
@@ -759,8 +881,8 @@ module SiSU_DAL_DocumentStructureExtract
         puts "<#{@s[0]}>"
       end
       data.each_with_index do |o,i|
-        if o.is ==:heading \
-        || o.is ==:heading_insert
+        if o.is==:heading \
+        || o.is==:heading_insert
           case o.ln
           when 1
             tuned_file << tag_close(o.ln,hs)
diff --git a/lib/sisu/v4/dal_expand_insertions.rb b/lib/sisu/v4/dal_expand_insertions.rb
index 52deed0a..be258417 100644
--- a/lib/sisu/v4/dal_expand_insertions.rb
+++ b/lib/sisu/v4/dal_expand_insertions.rb
@@ -332,9 +332,9 @@ module SiSU_DAL_Insertions
       tuned_file,tuned_file_tmp=[],[]
       codeblock_=false
       data.each do |para|
-        codeblock_=if para =~/^code\{/
+        codeblock_=if para =~/^(?:code\{|[`]{3}\s+code)/
           true
-        elsif para =~/^\}code/
+        elsif para =~/^(?:\}code|[`]{3}(?:\s|$))/m
           false
         else codeblock_
         end
diff --git a/lib/sisu/v4/dal_misc_arrange.rb b/lib/sisu/v4/dal_misc_arrange.rb
new file mode 100644
index 00000000..ab4f3ea4
--- /dev/null
+++ b/lib/sisu/v4/dal_misc_arrange.rb
@@ -0,0 +1,155 @@
+# encoding: utf-8
+=begin
+
+ * Name: SiSU
+
+ * Description: a framework for document structuring, publishing and search
+
+ * Author: Ralph Amissah
+
+ * Copyright: (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+   2007, 2008, 2009, 2010, 2011, 2012, 2013 Ralph Amissah, All Rights Reserved.
+
+ * License: GPL 3 or later:
+
+   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 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 <http://www.gnu.org/licenses/>.
+
+   If you have Internet connection, the latest version of the GPL should be
+   available at these locations:
+   <http://www.fsf.org/licensing/licenses/gpl.html>
+   <http://www.gnu.org/licenses/gpl.html>
+
+   <http://www.sisudoc.org/sisu/en/manifest/gpl.fsf.html>
+
+ * SiSU uses:
+   * Standard SiSU markup syntax,
+   * Standard SiSU meta-markup syntax, and the
+   * Standard SiSU object citation numbering and system
+
+ * Hompages:
+   <http://www.jus.uio.no/sisu>
+   <http://www.sisudoc.org>
+
+ * Download:
+   <http://www.sisudoc.org/sisu/en/SiSU/download.html>
+
+ * Git
+   <http://sources.sisudoc.org/gitweb/?p=code/sisu.git;a=summary>
+   <http://sources.sisudoc.org/?p=code/sisu.git;a=blob;f=lib/sisu/v5/dal_misc_arrange.rb;hb=HEAD>
+
+ * Ralph Amissah
+   <ralph@amissah.com>
+   <ralph.amissah@gmail.com>
+
+ ** Description: system environment, resource control and configuration details
+
+=end
+module SiSU_DAL_MiscArrangeText
+  class SI
+    def initialize(md,data)
+      @md,@data=md,data
+    end
+    def conditional_headings(para)
+      para=para.gsub(/^(:?A~)\s*$/,'\1~ @title @author').                                    #conditional header
+        gsub(/^((?:[1-9]|:?[A-C])~\S*)\s*$/,'\1~ [Note: heading marker::required title missing]~#')    #conditional header for incorporated document 2004w12
+      if para =~/^@\S+?:/
+        para=para.gsub(/^@(\S+?):(\s+|$)/,"#{Mx[:meta_o]}\\1#{Mx[:meta_c]}\\2").
+          gsub(/^@(\S+?):([+-])(\s+|$)/,"#{Mx[:meta_o]}\\1\\2#{Mx[:meta_c]}\\3")
+      end
+      para
+    end
+    def code_blocks(para)
+      def ticks(para)
+        block_open,block_close,text=nil,nil,nil
+        if para =~/\A[`]{3}\s+.+?\n.+?\n[`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?\s*\Z/m
+          block_open,text,block_close=/\A([`]{3}\s+.+?)\n(.+?)\n([`]{3}(\s+[~-][#]|\s+\~\{.+?\}\~)?)\s*\Z/m.match(para)[1..3]
+          para=[]
+          para << block_open << text << block_close
+        elsif para =~/\A[`]{3}\s+.+?\n.*?\Z/m #look at, study
+          block_open,text=/\A([`]{3}(?:\s+.+?))\n(.*?)\Z/m.match(para)[1,2]
+          para=[]
+          if not text.to_s.empty?
+            para << block_open << text
+          else
+            para << block_open
+          end
+        elsif para =~/\A.+?\n[`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?\s*\Z/m
+          text,block_close=/\A(.+?)\n([`]{3}(?:\s+[~-][#]|\s+\~\{.+?\}\~)?)\s*\Z/m.match(para)[1,2]
+          para=[]
+          if not text.to_s.empty?
+            para << text.to_s << block_close
+          else
+            para << block_close
+          end
+        else para
+        end
+        para
+      end
+      def curly_braces(para)
+        block_open,block_close,text=nil,nil,nil
+        para=if para =~/\A(?:code|poem|alt|group|block|table)\{ .+?\n.+?\n\}(?:code|poem|alt|group|block|table)(?: [~-][#])?\s*\Z/m
+          block_open,text,block_close=/\A((?:code|poem|alt|group|block|table)\{ .+?)\n(.+?)\n(\}(?:code|poem|alt|group|block|table)(?: [~-][#])?)\s*\Z/m.match(para)[1..3]
+          para=[]
+          para << block_open << text << block_close
+        elsif para =~/\A(?:code|poem|alt|group|block|table)\{ .+?\n.+?\Z/m
+          block_open,text=/\A((?:code|poem|alt|group|block|table)\{ .+?)\n(.+?)\Z/m.match(para)[1,2]
+          para=[]
+          if not text.to_s.empty?
+            para << block_open << text
+          else
+            para << block_open
+          end
+        elsif para =~/\A.+?\n\}(?:code|poem|alt|group|block|table)(?: [~-][#])?\s*\Z/m
+          text,block_close=/\A(.+?)\n(\}(?:code|poem|alt|group|block|table)(?: [~-][#])?)\s*\Z/m.match(para)[1,2]
+          para=[]
+          if not text.to_s.empty?
+            para << text.to_s << block_close
+          else
+            para << block_close
+          end
+        else para
+        end
+        para
+      end
+      para=para =~/^```/m \
+      ? ticks(para)
+      : para
+      para=(para =~/^(?:code|poem|alt|group|block|table)\{|^\}(?:code|poem|alt|group|block|table)/m) \
+      ? curly_braces(para)
+      : para
+    end
+    def prepare_text
+      data=@data
+      data_new=[],[]
+      if data[0] =~ /^#!\s*(?:\/usr\/bin\/env sisu|\/usr\/bin\/sisu)/ # remove bang from top #! (however file is stripped, so will be removed provided no content precedes it)
+        data[0]=data[0].gsub(/^#!\s*\/usr\/bin\/sisu/,'').
+          gsub(/^#!\s*\/usr\/bin\/env sisu/,'')
+      end
+      if data[0] =~ /^(SiSU\s+[\d.]*|sisu-[\d.]+)$/ # SiSU identifier
+        data[0]=data[0].gsub(/^(SiSU\s*[\d.]*)$/,'% \1').
+          gsub(/^(sisu-[\d.]+)$/,'% \1')
+      end
+      data.each do |para|
+        para=conditional_headings(para)
+        data_new << code_blocks(para)
+      end
+      data_new=data_new.flatten
+    end
+  end
+end
+__END__
diff --git a/lib/sisu/v4/dal_substitutions_and_insertions.rb b/lib/sisu/v4/dal_substitutions_and_insertions.rb
deleted file mode 100644
index 08a63c89..00000000
--- a/lib/sisu/v4/dal_substitutions_and_insertions.rb
+++ /dev/null
@@ -1,145 +0,0 @@
-# encoding: utf-8
-=begin
-
- * Name: SiSU
-
- * Description: a framework for document structuring, publishing and search
-
- * Author: Ralph Amissah
-
- * Copyright: (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-   2007, 2008, 2009, 2010, 2011, 2012, 2013 Ralph Amissah, All Rights Reserved.
-
- * License: GPL 3 or later:
-
-   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 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 <http://www.gnu.org/licenses/>.
-
-   If you have Internet connection, the latest version of the GPL should be
-   available at these locations:
-   <http://www.fsf.org/licensing/licenses/gpl.html>
-   <http://www.gnu.org/licenses/gpl.html>
-
-   <http://www.sisudoc.org/sisu/en/manifest/gpl.fsf.html>
-
- * SiSU uses:
-   * Standard SiSU markup syntax,
-   * Standard SiSU meta-markup syntax, and the
-   * Standard SiSU object citation numbering and system
-
- * Hompages:
-   <http://www.jus.uio.no/sisu>
-   <http://www.sisudoc.org>
-
- * Download:
-   <http://www.sisudoc.org/sisu/en/SiSU/download.html>
-
- * Git
-   <http://sources.sisudoc.org/gitweb/?p=code/sisu.git;a=summary>
-   <http://sources.sisudoc.org/?p=code/sisu.git;a=blob;f=lib/sisu/v4/dal_substitutions_and_insertions.rb;hb=HEAD>
-
- * Ralph Amissah
-   <ralph@amissah.com>
-   <ralph.amissah@gmail.com>
-
- ** Description: system environment, resource control and configuration details
-
-=end
-module SiSU_DAL_SubstituteAndInsert
-  class SI
-    def initialize(md,data)
-      @md,@data=md,data
-    end
-    def substitutions_and_insertions?
-      data=@data
-      data_expand=[]
-      if data[0] =~ /^#!\s*(?:\/usr\/bin\/env sisu|\/usr\/bin\/sisu)/ # remove bang from top #! (however file is stripped, so will be removed provided no content precedes it)
-        data[0]=data[0].gsub(/^#!\s*\/usr\/bin\/sisu/,'').
-          gsub(/^#!\s*\/usr\/bin\/env sisu/,'')
-      end
-      if data[0] =~ /^(SiSU\s+[\d.]*|sisu-[\d.]+)$/ # SiSU identifier
-        data[0]=data[0].gsub(/^(SiSU\s*[\d.]*)$/,'% \1').
-          gsub(/^(sisu-[\d.]+)$/,'% \1')
-      end
-      data.each do |para|
-        if para =~/<:(insert\d+)!?>/ \
-        and para !~/^%\s+/
-          ins=SiSU_Viz::Inserts.new
-          case para
-          when /^\s*<:(insert1)>\s*$/
-            i=$1
-            if defined? ins.insert1
-              para=[]
-              ins.insert1.split(/\n\n/).each {|x| para << x }
-            end
-          when /^\s*<:(insert2)>\s*$/
-            i=$1
-            if defined? ins.insert2
-              para=[]
-              ins.insert2.split(/\n\n/).each {|x| para << x }
-            end
-          when /^\s*<:(insert3)>\s*$/
-            i=$1
-            if defined? ins.insert3
-              para=[]
-              ins.insert3.split(/\n\n/).each {|x| para << x << "\n"}
-            end
-          when /^\s*<:(insert4)>\s*$/
-            i=$1
-            if defined? ins.insert4
-              para=[]
-              ins.insert4.split(/\n\n/).each {|x| para << x << "\n"}
-            end
-          when /^\s*<:(insert5)>\s*$/
-            i=$1
-            if defined? ins.insert5
-              para=[]
-              ins.insert5.split(/\n\n/).each {|x| para << x << "\n"}
-            end
-          when /^\s*<:(insert6)>\s*$/
-            i=$1
-            if defined? ins.insert6
-              para=[]
-              ins.insert6.split(/\n\n/).each {|x| para << x << "\n"}
-            end
-          when /^\s*<:(insert7)>\s*$/
-            i=$1
-            if defined? ins.insert7
-              para=[]
-              ins.insert7.split(/\n\n/).each {|x| para << x << "\n"}
-            end
-          end
-          para.each {|x| data_expand << x }
-        else data_expand << para
-        end
-        data_expand=data_expand.flatten.compact
-      end
-      data_new=[]
-      data_expand.each do |para|
-        para=para.gsub(/^(:?A~)\s*$/,'\1~ @title @author').                                    #conditional header
-          gsub(/^((?:[1-9]|:?[A-C])~\S*)\s*$/,'\1~ [Note: heading marker::required title missing]~#')    #conditional header for incorporated document 2004w12
-        if para =~/^@\S+?:/
-          para=para.gsub(/^@(\S+?):(\s+|$)/,"#{Mx[:meta_o]}\\1#{Mx[:meta_c]}\\2").
-            gsub(/^@(\S+?):([+-])(\s+|$)/,"#{Mx[:meta_o]}\\1\\2#{Mx[:meta_c]}\\3")
-        end
-        data_new << para
-      end
-      data_new
-    end
-  end
-end
-__END__
diff --git a/lib/sisu/v4/dal_syntax.rb b/lib/sisu/v4/dal_syntax.rb
index ed9fa52d..eb23fd22 100644
--- a/lib/sisu/v4/dal_syntax.rb
+++ b/lib/sisu/v4/dal_syntax.rb
@@ -309,17 +309,17 @@ module SiSU_DAL_Syntax
       dob
     end
     def fontface(dob)
-      dob.obj=dob.obj.gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|#{Mx[:nbsp]}|#{Mx[:fa_o_c]}|#{Mx[:fa_c]}|#{Mx[:lnk_o]}|#{Mx[:br_line]}|#{Mx[:br_paragraph]}|[\(\[\{]|\>)\*\{(.+?)\}\*/m,
+      dob.obj=dob.obj.gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|[#{Mx[:nbsp]}#{Mx[:fa_o_c]}#{Mx[:fa_c]}#{Mx[:lnk_o]}#{Mx[:br_nl]}#{Mx[:br_line]}#{Mx[:br_paragraph]}#{Mx[:tc_c]}#{Mx[:tc_p]}]|[\(\[\{]|\>)\*\{(.+?)\}\*/m,
           "\\1#{@emph[:o]}\\2#{@emph[:c]}").                                                                                                                             #emphasis
-        gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|#{Mx[:nbsp]}|#{Mx[:fa_o_c]}|#{Mx[:fa_c]}|#{Mx[:lnk_o]}|#{Mx[:br_line]}|#{Mx[:br_paragraph]}|[\(\[\{]|\>)!\{(.+?)\}!/m,
+        gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|[#{Mx[:nbsp]}#{Mx[:fa_o_c]}#{Mx[:fa_c]}#{Mx[:lnk_o]}#{Mx[:br_nl]}#{Mx[:br_line]}#{Mx[:br_paragraph]}#{Mx[:tc_c]}#{Mx[:tc_p]}]|[\(\[\{]|\>)!\{(.+?)\}!/m,
           "\\1#{Mx[:fa_bold_o]}\\2#{Mx[:fa_bold_c]}").                                                                                                                   #bold
-        gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|#{Mx[:nbsp]}|#{Mx[:fa_o_c]}|#{Mx[:fa_c]}|#{Mx[:lnk_o]}|#{Mx[:br_line]}|#{Mx[:br_paragraph]}|[\(\[\{]|\(|\>)\/\{(.+?)\}\//m,
+        gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|[#{Mx[:nbsp]}#{Mx[:fa_o_c]}#{Mx[:fa_c]}#{Mx[:lnk_o]}#{Mx[:br_nl]}#{Mx[:br_line]}#{Mx[:br_paragraph]}#{Mx[:tc_c]}#{Mx[:tc_p]}]|[\(\[\{]|\(|\>)\/\{(.+?)\}\//m,
           "\\1#{Mx[:fa_italics_o]}\\2#{Mx[:fa_italics_c]}").                                                                                                             #italics
-        gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|#{Mx[:nbsp]}|#{Mx[:fa_o_c]}|#{Mx[:fa_c]}|#{Mx[:lnk_o]}|#{Mx[:br_line]}|#{Mx[:br_paragraph]}|[\(\[\{]|\>)_\{(.+?)\}_/m,
+        gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|[#{Mx[:nbsp]}#{Mx[:fa_o_c]}#{Mx[:fa_c]}#{Mx[:lnk_o]}#{Mx[:br_nl]}#{Mx[:br_line]}#{Mx[:br_paragraph]}#{Mx[:tc_c]}#{Mx[:tc_p]}]|[\(\[\{]|\>)_\{(.+?)\}_/m,
           "\\1#{Mx[:fa_underscore_o]}\\2#{Mx[:fa_underscore_c]}").                                                                                                       #underscore
-        gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|#{Mx[:nbsp]}|#{Mx[:fa_o_c]}|#{Mx[:fa_c]}|#{Mx[:lnk_o]}|#{Mx[:br_line]}|#{Mx[:br_paragraph]}|[\(\[\{]|\>)#\{(.+?)\}#/m,
+        gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|[#{Mx[:nbsp]}#{Mx[:fa_o_c]}#{Mx[:fa_c]}#{Mx[:lnk_o]}#{Mx[:br_nl]}#{Mx[:br_line]}#{Mx[:br_paragraph]}#{Mx[:tc_c]}#{Mx[:tc_p]}]|[\(\[\{]|\>)#\{(.+?)\}#/m,
           "\\1#{Mx[:fa_monospace_o]}\\2#{Mx[:fa_monospace_c]}").                                                                                                         #monospace
-        gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|#{Mx[:nbsp]}|#{Mx[:fa_o_c]}|#{Mx[:fa_c]}|\(|\>)\"\{(.+?)\}\"/m,
+        gsub(/(^|#{Mx[:gl_c]}|\s+|['"]|[#{Mx[:nbsp]}#{Mx[:fa_o_c]}#{Mx[:fa_c]}]|\(|\>)\"\{(.+?)\}\"/m,
           "\\1#{Mx[:fa_cite_o]}\\2#{Mx[:fa_c_o]}cite#{Mx[:fa_c]}").                                                                                                      #cite /blockquote?
         gsub(/(^|[^\\])\^\{(.+?)\}\^/m,
           "\\1#{Mx[:fa_superscript_o]}\\2#{Mx[:fa_superscript_c]}").                                                                                                     #superscript
@@ -444,7 +444,7 @@ module SiSU_DAL_Syntax
               "\\1#{Mx[:lnk_o]}\\2#{Mx[:lnk_c]}\\3\\4 #{Mx[:en_a_o]}\\3#{Mx[:en_a_c]} ")
           end
           dob.obj=dob.obj.gsub(/(^|[^#])\{\s*([^{}]+?)\s*\}((?:https?:|:|[.]{2}\/|#)\S+?)(?=\s|[#{Mx[:br_line]}#{Mx[:br_paragraph]}#{Mx[:br_nl]}#{Mx[:en_a_o]}#{Mx[:en_b_o]}]|$)/,
-              "\\1#{Mx[:lnk_o]}\\2#{Mx[:lnk_c]}\\3"). #linked (text or image, however text cannot include modified face, e.g. bold, ital, underline)
+              "\\1#{Mx[:lnk_o]}\\2#{Mx[:lnk_c]}\\3").                                                                                                                    #linked (text or image, however text cannot include modified face, e.g. bold, ital, underline)
             gsub(/(^|[#{Mx[:gl_c]}#{Mx[:lnk_c]}#{Mx[:en_a_o]}#{Mx[:en_b_o]}(\s])((?:https?|ftp):\/\/\S+?\.[^>< ]+?)([,.;'"]?)(?=[\s#{Mx[:en_a_c]}#{Mx[:en_b_c]}#{Mx[:br_line]}#{Mx[:br_paragraph]}#{Mx[:br_nl]}]|$)/m,
               %{\\1#{Mx[:url_o]}\\2#{Mx[:url_c]}\\3}).
             gsub(/#{Mx[:lnk_c]}#(\S+?[^>< ]+?)([()\[\]]*[,.;:!?'"]{0,2})(?=[\s#{Mx[:en_a_c]}#{Mx[:en_b_c]}#{Mx[:br_line]}#{Mx[:br_paragraph]}#{Mx[:br_nl]}]|$)/m,
@@ -462,40 +462,40 @@ module SiSU_DAL_Syntax
         dob.obj=dob.obj.gsub(/<[:e]\s+(.+?)!?>/,
             "#{Mx[:en_a_o]}\\1#{Mx[:en_a_c]}").                                                                                                                             #not tested
           gsub(/(^|#{Mx[:br_nl]})\s*_\*\s*/,
-            "\\1#{Mx[:gl_bullet]}").                                                                                                                                           #bullets, shortcut
+            "\\1#{Mx[:gl_bullet]}").                                                                                                                                        #bullets, shortcut
           gsub(/=\{(.+?)\}/,
             "#{Mx[:idx_o]}\\1#{Mx[:idx_c]}").
           gsub(/^\s*_([1-9])\*\s*/,
-            "#{Mx[:pa_o]}:i\\1:\\1#{Mx[:pa_c]}#{Mx[:gl_bullet]}").                                                                                                              #bullets, shortcut
+            "#{Mx[:pa_o]}:i\\1:\\1#{Mx[:pa_c]}#{Mx[:gl_bullet]}").                                                                                                          #bullets, shortcut
           gsub(/^\s*_([1-9])\s+/,
-            "#{Mx[:pa_o]}:i\\1:\\1#{Mx[:pa_c]}").                                                                                                                               #indent
+            "#{Mx[:pa_o]}:i\\1:\\1#{Mx[:pa_c]}").                                                                                                                           #indent
           gsub(/^\s*_([1-9])!\s+(.+?)\s*$/,
-            "#{Mx[:pa_o]}:i\\1:\\1#{Mx[:pa_c]}#{Mx[:fa_bold_o]}\\2#{Mx[:fa_bold_c]} ").                                                                                                                               #indent bold
+            "#{Mx[:pa_o]}:i\\1:\\1#{Mx[:pa_c]}#{Mx[:fa_bold_o]}\\2#{Mx[:fa_bold_c]} ").                                                                                     #indent bold
           gsub(/^\s*__([1-9])\s+/,
-            "#{Mx[:pa_o]}:i0:\\1#{Mx[:pa_c]}").                                                                                                                               #hang
+            "#{Mx[:pa_o]}:i0:\\1#{Mx[:pa_c]}").                                                                                                                             #hang
           gsub(/^\s*__([1-9])!\s+(.+?)\s*$/,
-            "#{Mx[:pa_o]}:i0:\\1#{Mx[:pa_c]}#{Mx[:fa_bold_o]}\\2#{Mx[:fa_bold_c]} ").                                                                                                                          #hangdef
+            "#{Mx[:pa_o]}:i0:\\1#{Mx[:pa_c]}#{Mx[:fa_bold_o]}\\2#{Mx[:fa_bold_c]} ").                                                                                       #hangdef
           gsub(/^\s*_([0-9])_([0-9])\s+/,
-            "#{Mx[:pa_o]}:i\\1:\\2#{Mx[:pa_c]}").                                                                                                                               #hang
+            "#{Mx[:pa_o]}:i\\1:\\2#{Mx[:pa_c]}").                                                                                                                           #hang
           gsub(/^\s*_([0-9])_([0-9])!\s+(.+?)\s*$/,
-            "#{Mx[:pa_o]}:i\\1:\\2#{Mx[:pa_c]}#{Mx[:fa_bold_o]}\\3#{Mx[:fa_bold_c]} ").                                                                                                                          #hangdef
-          gsub(/<:hi>/,"#{Mx[:fa_hilite_o]}"). #'<span style="background-color: rgb(255,240,196)">')   # bright yellow rgb(255,255,0) pale yellow rgb(255,255,200)
-          gsub(/<:\/hi>/,"#{Mx[:fa_hilite_c]}"). #'</span>')
+            "#{Mx[:pa_o]}:i\\1:\\2#{Mx[:pa_c]}#{Mx[:fa_bold_o]}\\3#{Mx[:fa_bold_c]} ").                                                                                     #hangdef
+          gsub(/<:hi>/,"#{Mx[:fa_hilite_o]}").                                                                                                                              #'<span style="background-color: rgb(255,240,196)">'). # bright yellow rgb(255,255,0) pale yellow rgb(255,255,200)
+          gsub(/<:\/hi>/,"#{Mx[:fa_hilite_c]}"). #'</span>').
           gsub(/(#{Mx[:gr_o]}verse#{Mx[:gr_c]}.+)/m,"\\1\n").
           gsub(/[ ]+($)/,'\1').
           gsub(/\{\s*(.+?)\s*\}(https?:\S+?)([;,.]?)(?=\s|[#{Mx[:br_line]}#{Mx[:br_paragraph]}#{Mx[:br_nl]}#{Mx[:en_a_o]}#{Mx[:en_b_o]}]|$)/,
-            "#{Mx[:lnk_o]}\\1#{Mx[:lnk_c]}#{Mx[:url_o]}\\2#{Mx[:url_c]}\\3"). #any remaining linked text or image
+            "#{Mx[:lnk_o]}\\1#{Mx[:lnk_c]}#{Mx[:url_o]}\\2#{Mx[:url_c]}\\3").                                                                                               #any remaining linked text or image
           gsub(/\{\s*(.+?)\s*\}(#{Mx[:url_o]}\S+?#{Mx[:url_c]})/,
-            "#{Mx[:lnk_o]}\\1#{Mx[:lnk_c]}\\2"). #any remaining linked text or image
+            "#{Mx[:lnk_o]}\\1#{Mx[:lnk_c]}\\2").                                                                                                                            #any remaining linked text or image
           gsub(/(^|\s)([a-zA-Z0-9._-]+\@\S+?\.[a-zA-Z0-9._-]+)/,"\\1#{Mx[:url_o]}\\2#{Mx[:url_c]}").
           gsub(/(^|[ ])\{\s*(.+?)\s*\}(\S+?)([;,.]?)(?=\s|[#{Mx[:br_line]}#{Mx[:br_paragraph]}#{Mx[:br_nl]}#{Mx[:en_a_o]}#{Mx[:en_b_o]}]|$)/,
-            "\\1#{Mx[:lnk_o]}\\2#{Mx[:lnk_c]}\\3\\4"). #any remaining linked text or image
+            "\\1#{Mx[:lnk_o]}\\2#{Mx[:lnk_c]}\\3\\4").                                                                                                                      #any remaining linked text or image
           gsub(/\{\s*(.+?)\s*\}#([a-zA-Z0-9][a-zA-Z0-9_-]*)([;,.]?)(?=\s|[#{Mx[:br_line]}#{Mx[:br_paragraph]}#{Mx[:br_nl]}#{Mx[:en_a_o]}#{Mx[:en_b_o]}]|$)/,
-            "#{Mx[:lnk_o]}\\1#{Mx[:lnk_c]}#{Mx[:rel_o]}\\2#{Mx[:rel_c]}\\3"). #any remaining linked text or image, check need
+            "#{Mx[:lnk_o]}\\1#{Mx[:lnk_c]}#{Mx[:rel_o]}\\2#{Mx[:rel_c]}\\3").                                                                                               #any remaining linked text or image, check need
           gsub(/\{\s*(.+?)\s*\}(#{Mx[:rel_o]}\S+?#{Mx[:rel_c]})/,
-            "#{Mx[:lnk_o]}\\1#{Mx[:lnk_c]}\\2"). #any remaining linked text or image, check need
+            "#{Mx[:lnk_o]}\\1#{Mx[:lnk_c]}\\2").                                                                                                                            #any remaining linked text or image, check need
           gsub(/\{\s*(.+?)\s*\}(image)/,
-            "#{Mx[:lnk_o]}\\1#{Mx[:lnk_c]}\\2")      #linked image
+            "#{Mx[:lnk_o]}\\1#{Mx[:lnk_c]}\\2")                                                                                                                             #linked image
       elsif dob.is==:table
         dob=fontface(dob)
       elsif dob.is ==:code