0.26.3 object info changes

1 files changed, 973 insertions, 965 deletions

diff --git a/org/meta_abstraction.org b/org/meta_abstraction.org
index f74c8d6..b1c08ad 100644
--- a/org/meta_abstraction.org
+++ b/org/meta_abstraction.org
@@ -247,7 +247,7 @@ pure auto obj_heading_ancestors(O)(
   O          obj,
   string[]   lv_ancestors_txt,
 ) {
-  switch (obj.heading_lev_markup) {
+  switch (obj.node.heading_lev_markup) {
   case 0:
     lv_ancestors_txt[0] = obj.text.to!string;
     foreach(k; 1..8) {
@@ -292,7 +292,7 @@ pure auto obj_heading_ancestors(O)(
     lv_ancestors_txt[7] = obj.text.to!string;
     goto default;
   default:
-    obj.heading_ancestors_text = lv_ancestors_txt.dup;
+    obj.tags.heading_ancestors_text = lv_ancestors_txt.dup;
   }
   return obj;
 }
@@ -343,7 +343,7 @@ pure auto obj_dom_structure_set_markup_tags(O)(
   debug(dom_magic_numbers) {
     writeln("marked up: ", lev, ": ", dom);
   }
-  obj.dom_markedup = dom.dup;
+  obj.node.dom_markedup = dom.dup;
   return obj;
 }
 #+END_SRC
@@ -393,7 +393,7 @@ pure auto obj_dom_set_collapsed_tags(O)(
   debug(dom_magic_numbers) {
     writeln("collapsed: ", lev, ": ", dom);
   }
-  obj.dom_collapsed = dom.dup;
+  obj.node.dom_collapsed = dom.dup;
   return obj;
 }
 #+END_SRC
@@ -500,29 +500,29 @@ auto heading_match_rgx = [
 ];
 string _anchor_tag;
 string toc_txt_;
-an_object["glossary_nugget"]            = "";
-an_object["blurb_nugget"]               = "";
-comp_obj_heading_                       = comp_obj_heading_.init;
-comp_obj_heading_.of_part               = "frontmatter";
-comp_obj_heading_.of_section            = "toc";
-comp_obj_heading_.is_of                 = "para";
-comp_obj_heading_.is_a                  = "heading";
-comp_obj_heading_.text                  = "Table of Contents";
-comp_obj_heading_.ocn                   = 0;
-comp_obj_heading_.obj_cite_number       = "";
-comp_obj_heading_.obj_cite_number_off   = "";
-comp_obj_heading_.obj_cite_number_type  = 0;
-comp_obj_heading_.segment_anchor_tag    = "toc";
-comp_obj_heading_.marked_up_level       = "1";
-comp_obj_heading_.heading_lev_markup    = 4;
-comp_obj_heading_.heading_lev_collapsed = 1;
-comp_obj_heading_.parent_ocn            = 1;
-comp_obj_heading_.parent_lev_markup     = 0;
-comp_obj_heading_.ptr_html_segnames     = html_segnames_ptr;
-comp_obj_heading_.anchor_tags           = ["toc"];
-comp_obj_heading_.dom_markedup          = [ 1, 1, 0, 0, 1, 0, 0, 0];
-comp_obj_heading_.dom_collapsed         = [ 1, 1, 1, 0, 0, 0, 0, 0];
-auto toc_head                           = comp_obj_heading_;
+an_object["glossary_nugget"]                 = "";
+an_object["blurb_nugget"]                    = "";
+comp_obj_heading_                            = comp_obj_heading_.init;
+comp_obj_heading_.typeinfo.of_part           = "frontmatter";
+comp_obj_heading_.typeinfo.of_section        = "toc";
+comp_obj_heading_.typeinfo.is_of             = "para";
+comp_obj_heading_.typeinfo.is_a              = "heading";
+comp_obj_heading_.text                       = "Table of Contents";
+comp_obj_heading_.node.ocn                   = 0;
+comp_obj_heading_.node.obj_cite_number       = "";
+comp_obj_heading_.misc.obj_cite_number_off   = "";
+comp_obj_heading_.misc.obj_cite_number_type  = 0;
+comp_obj_heading_.tags.segment_anchor_tag    = "toc";
+comp_obj_heading_.node.marked_up_level       = "1";
+comp_obj_heading_.node.heading_lev_markup    = 4;
+comp_obj_heading_.node.heading_lev_collapsed = 1;
+comp_obj_heading_.node.parent_ocn            = 1;
+comp_obj_heading_.node.parent_lev_markup     = 0;
+comp_obj_heading_.ptr.html_segnames          = html_segnames_ptr;
+comp_obj_heading_.tags.anchor_tags           = ["toc"];
+comp_obj_heading_.node.dom_markedup          = [ 1, 1, 0, 0, 1, 0, 0, 0];
+comp_obj_heading_.node.dom_collapsed         = [ 1, 1, 1, 0, 0, 0, 0, 0];
+auto toc_head                                = comp_obj_heading_;
 html_segnames_ptr_cntr++;
 the_table_of_contents_section = [
   "seg": [toc_head],
@@ -679,60 +679,60 @@ if there is a glossary section you need to:
     line_occur["para"] = State.off;
     an_object_key="glossary_nugget"; //
     if (line.matchFirst(rgx.heading_glossary)) {
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.of_part               = "backmatter";
-      comp_obj_heading_.of_section            = "glossary";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "Glossary";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_heading_.segment_anchor_tag    = "_part_glossary";
-      comp_obj_heading_.marked_up_level       = "B";
-      comp_obj_heading_.heading_lev_markup    = 1;
-      comp_obj_heading_.heading_lev_collapsed = 1;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      comp_obj_heading_.dom_markedup          = [ 1, 1, 0, 0, 0, 0, 0, 0];
-      comp_obj_heading_.dom_collapsed         = [ 1, 1, 0, 0, 0, 0, 0, 0];
-      the_glossary_section                    ~= comp_obj_heading_;
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.of_part               = "backmatter";
-      comp_obj_heading_.of_section            = "glossary";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "Glossary";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_heading_.segment_anchor_tag    = "glossary";
-      comp_obj_heading_.marked_up_level       = "1";
-      comp_obj_heading_.heading_lev_markup    = 4;
-      comp_obj_heading_.heading_lev_collapsed = 2;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      comp_obj_heading_.dom_markedup          = [ 1, 1, 0, 0, 1, 0, 0, 0];
-      comp_obj_heading_.dom_collapsed         = [ 1, 1, 1, 0, 0, 0, 0, 0];
-      comp_obj_heading_.anchor_tags           = ["glossary"];
-      the_glossary_section                    ~= comp_obj_heading_;
+      comp_obj_heading_                            = comp_obj_heading_.init;
+      comp_obj_heading_.typeinfo.of_part           = "backmatter";
+      comp_obj_heading_.typeinfo.of_section        = "glossary";
+      comp_obj_heading_.typeinfo.is_of             = "para";
+      comp_obj_heading_.typeinfo.is_a              = "heading";
+      comp_obj_heading_.text                       = "Glossary";
+      comp_obj_heading_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_number_type  = 0;
+      comp_obj_heading_.tags.segment_anchor_tag    = "_part_glossary";
+      comp_obj_heading_.node.marked_up_level       = "B";
+      comp_obj_heading_.node.heading_lev_markup    = 1;
+      comp_obj_heading_.node.heading_lev_collapsed = 1;
+      comp_obj_heading_.node.parent_ocn            = 1;
+      comp_obj_heading_.node.parent_lev_markup     = 0;
+      comp_obj_heading_.node.dom_markedup          = [ 1, 1, 0, 0, 0, 0, 0, 0];
+      comp_obj_heading_.node.dom_collapsed         = [ 1, 1, 0, 0, 0, 0, 0, 0];
+      the_glossary_section                         ~= comp_obj_heading_;
+      comp_obj_heading_                            = comp_obj_heading_.init;
+      comp_obj_heading_.typeinfo.of_part           = "backmatter";
+      comp_obj_heading_.typeinfo.of_section        = "glossary";
+      comp_obj_heading_.typeinfo.is_of             = "para";
+      comp_obj_heading_.typeinfo.is_a              = "heading";
+      comp_obj_heading_.text                       = "Glossary";
+      comp_obj_heading_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_number_type  = 0;
+      comp_obj_heading_.tags.segment_anchor_tag    = "glossary";
+      comp_obj_heading_.node.marked_up_level       = "1";
+      comp_obj_heading_.node.heading_lev_markup    = 4;
+      comp_obj_heading_.node.heading_lev_collapsed = 2;
+      comp_obj_heading_.node.parent_ocn            = 1;
+      comp_obj_heading_.node.parent_lev_markup     = 0;
+      comp_obj_heading_.node.dom_markedup          = [ 1, 1, 0, 0, 1, 0, 0, 0];
+      comp_obj_heading_.node.dom_collapsed         = [ 1, 1, 1, 0, 0, 0, 0, 0];
+      comp_obj_heading_.tags.anchor_tags           = ["glossary"];
+      the_glossary_section                         ~= comp_obj_heading_;
     } else {
       _para_match_(line, an_object, an_object_key, indent, bullet, obj_type_status, line_occur);
       comp_obj_para                           = comp_obj_para.init;
-      comp_obj_para.of_part                   = "backmatter";
-      comp_obj_para.of_section                = "glossary";
-      comp_obj_para.is_of                     = "para";
-      comp_obj_para.is_a                      = "glossary";
+      comp_obj_para.typeinfo.of_part          = "backmatter";
+      comp_obj_para.typeinfo.of_section       = "glossary";
+      comp_obj_para.typeinfo.is_of            = "para";
+      comp_obj_para.typeinfo.is_a             = "glossary";
       comp_obj_para.text                      = line.to!string.strip;
-      comp_obj_para.ocn                       = 0;
-      comp_obj_para.obj_cite_number           = "";
-      comp_obj_para.obj_cite_number_off       = "";
-      comp_obj_para.obj_cite_number_type      = 0;
-      comp_obj_para.indent_hang               = indent["hang_position"];
-      comp_obj_para.indent_base               = indent["base_position"];
-      comp_obj_para.bullet                    = bullet;
+      comp_obj_para.node.ocn                  = 0;
+      comp_obj_para.node.obj_cite_number      = "";
+      comp_obj_para.misc.obj_cite_number_off  = "";
+      comp_obj_para.misc.obj_cite_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_glossary_section                    ~= comp_obj_para;
     }
     obj_type_status["ocn_status"] = OCNstatus.on;
@@ -803,80 +803,80 @@ if there is a blurb section you need to:
     line_occur["para"] = State.off;
     an_object_key="blurb_nugget";
     if (line.matchFirst(rgx.heading_blurb)) {
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.of_part               = "backmatter";
-      comp_obj_heading_.of_section            = "blurb";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "Blurb";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_heading_.segment_anchor_tag    = "_part_blurb";
-      comp_obj_heading_.marked_up_level       = "B";
-      comp_obj_heading_.heading_lev_markup    = 1;
-      comp_obj_heading_.heading_lev_collapsed = 1;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      comp_obj_heading_.dom_markedup          = [ 1, 1, 0, 0, 0, 0, 0, 0];
-      comp_obj_heading_.dom_collapsed         = [ 1, 1, 0, 0, 0, 0, 0, 0];
-      the_blurb_section                       ~= comp_obj_heading_;
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.of_part               = "backmatter";
-      comp_obj_heading_.of_section            = "blurb";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "Blurb";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_heading_.segment_anchor_tag    = "blurb";
-      comp_obj_heading_.marked_up_level       = "1";
-      comp_obj_heading_.heading_lev_markup    = 4;
-      comp_obj_heading_.heading_lev_collapsed = 2;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      comp_obj_heading_.anchor_tags           = ["blurb"];
-      comp_obj_heading_.dom_markedup          = [ 1, 1, 0, 0, 1, 0, 0, 0];
-      comp_obj_heading_.dom_collapsed         = [ 1, 1, 1, 0, 0, 0, 0, 0];
-      the_blurb_section                       ~= comp_obj_heading_;
+      comp_obj_heading_                            = comp_obj_heading_.init;
+      comp_obj_heading_.typeinfo.of_part           = "backmatter";
+      comp_obj_heading_.typeinfo.of_section        = "blurb";
+      comp_obj_heading_.typeinfo.is_of             = "para";
+      comp_obj_heading_.typeinfo.is_a              = "heading";
+      comp_obj_heading_.text                       = "Blurb";
+      comp_obj_heading_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_number_type  = 0;
+      comp_obj_heading_.tags.segment_anchor_tag    = "_part_blurb";
+      comp_obj_heading_.node.marked_up_level       = "B";
+      comp_obj_heading_.node.heading_lev_markup    = 1;
+      comp_obj_heading_.node.heading_lev_collapsed = 1;
+      comp_obj_heading_.node.parent_ocn            = 1;
+      comp_obj_heading_.node.parent_lev_markup     = 0;
+      comp_obj_heading_.node.dom_markedup          = [ 1, 1, 0, 0, 0, 0, 0, 0];
+      comp_obj_heading_.node.dom_collapsed         = [ 1, 1, 0, 0, 0, 0, 0, 0];
+      the_blurb_section                            ~= comp_obj_heading_;
+      comp_obj_heading_                            = comp_obj_heading_.init;
+      comp_obj_heading_.typeinfo.of_part           = "backmatter";
+      comp_obj_heading_.typeinfo.of_section        = "blurb";
+      comp_obj_heading_.typeinfo.is_of             = "para";
+      comp_obj_heading_.typeinfo.is_a              = "heading";
+      comp_obj_heading_.text                       = "Blurb";
+      comp_obj_heading_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_number_type  = 0;
+      comp_obj_heading_.tags.segment_anchor_tag    = "blurb";
+      comp_obj_heading_.node.marked_up_level       = "1";
+      comp_obj_heading_.node.heading_lev_markup    = 4;
+      comp_obj_heading_.node.heading_lev_collapsed = 2;
+      comp_obj_heading_.node.parent_ocn            = 1;
+      comp_obj_heading_.node.parent_lev_markup     = 0;
+      comp_obj_heading_.tags.anchor_tags           = ["blurb"];
+      comp_obj_heading_.node.dom_markedup          = [ 1, 1, 0, 0, 1, 0, 0, 0];
+      comp_obj_heading_.node.dom_collapsed         = [ 1, 1, 1, 0, 0, 0, 0, 0];
+      the_blurb_section                            ~= comp_obj_heading_;
     } else if (line.matchFirst(rgx.heading)
     && (opt_action.backmatter && opt_action.section_blurb)) {
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.of_part               = "backmatter";
-      comp_obj_heading_.of_section            = "blurb";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = line.to!string;
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_heading_.segment_anchor_tag    = "blurb";
-      comp_obj_heading_.marked_up_level       = an_object["lev"].to!string;
-      comp_obj_heading_.heading_lev_markup    = an_object["lev_markup_number"].to!int;    // make int, remove need to conv
-      comp_obj_heading_.heading_lev_collapsed = an_object["lev_collapsed_number"].to!int; // make int, remove need to conv
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      the_blurb_section                       ~= comp_obj_heading_;
+      comp_obj_heading_                            = comp_obj_heading_.init;
+      comp_obj_heading_.typeinfo.of_part           = "backmatter";
+      comp_obj_heading_.typeinfo.of_section        = "blurb";
+      comp_obj_heading_.typeinfo.is_of             = "para";
+      comp_obj_heading_.typeinfo.is_a              = "heading";
+      comp_obj_heading_.text                       = line.to!string;
+      comp_obj_heading_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_number_type  = 0;
+      comp_obj_heading_.tags.segment_anchor_tag    = "blurb";
+      comp_obj_heading_.node.marked_up_level       = an_object["lev"].to!string;
+      comp_obj_heading_.node.heading_lev_markup    = an_object["lev_markup_number"].to!int;    // make int, remove need to conv
+      comp_obj_heading_.node.heading_lev_collapsed = an_object["lev_collapsed_number"].to!int; // make int, remove need to conv
+      comp_obj_heading_.node.parent_ocn            = 1;
+      comp_obj_heading_.node.parent_lev_markup     = 0;
+      the_blurb_section                            ~= comp_obj_heading_;
     } else {
       _para_match_(line, an_object, an_object_key, indent, bullet, obj_type_status, line_occur);
       comp_obj_para                           = comp_obj_para.init;
-      comp_obj_para.of_part                   = "backmatter";
-      comp_obj_para.of_section                = "blurb";
-      comp_obj_para.is_of                     = "para";
-      comp_obj_para.is_a                      = "blurb";
+      comp_obj_para.typeinfo.of_part          = "backmatter";
+      comp_obj_para.typeinfo.of_section       = "blurb";
+      comp_obj_para.typeinfo.is_of            = "para";
+      comp_obj_para.typeinfo.is_a             = "blurb";
       comp_obj_para.text                      = munge.url_links(line.to!string.strip).replaceFirst(rgx.para_attribs, "");
-      comp_obj_para.ocn                       = 0;
-      comp_obj_para.obj_cite_number           = "";
-      comp_obj_para.obj_cite_number_off       = "";
-      comp_obj_para.obj_cite_number_type      = 0;
-      comp_obj_para.indent_hang               = indent["hang_position"];
-      comp_obj_para.indent_base               = indent["base_position"];
-      comp_obj_para.inline_links              = true;
-      comp_obj_para.bullet                    = bullet;
+      comp_obj_para.node.ocn                  = 0;
+      comp_obj_para.node.obj_cite_number      = "";
+      comp_obj_para.misc.obj_cite_number_off  = "";
+      comp_obj_para.misc.obj_cite_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_blurb_section                       ~= comp_obj_para;
     }
     obj_type_status["ocn_status"] = OCNstatus.on;
@@ -1037,14 +1037,14 @@ if (line.matchFirst(rgx.book_index)
     debug(comment) {
       writeln(line);
     }
-    an_object[an_object_key]           ~= line ~= "\n";
-    comp_obj_comment                   = comp_obj_comment.init;
-    comp_obj_comment.of_part           = "comment"; // breaks flow
-    comp_obj_comment.of_section        = "comment"; // breaks flow
-    comp_obj_comment.is_of             = "comment";
-    comp_obj_comment.is_a              = "comment";
-    comp_obj_comment.text              = an_object[an_object_key].strip;
-    the_document_body_section          ~= comp_obj_comment;
+    an_object[an_object_key]             ~= line ~= "\n";
+    comp_obj_comment                     = comp_obj_comment.init;
+    comp_obj_comment.typeinfo.of_part    = "comment"; // breaks flow
+    comp_obj_comment.typeinfo.of_section = "comment"; // breaks flow
+    comp_obj_comment.typeinfo.is_of      = "comment";
+    comp_obj_comment.typeinfo.is_a       = "comment";
+    comp_obj_comment.text                = an_object[an_object_key].strip;
+    the_document_body_section            ~= comp_obj_comment;
     _common_reset_(line_occur, an_object, obj_type_status);
     processing.remove("verse");
     ++cntr;
@@ -1281,26 +1281,26 @@ if ((obj_type_status["heading"] == State.on)
     = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta);
   an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
   anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
-  comp_obj_para                       = comp_obj_para.init;
-  comp_obj_para.of_part               = "body";
-  comp_obj_para.of_section            = "body";
-  comp_obj_para.is_of                 = "para";
-  comp_obj_para.is_a                  = "para";
-  comp_obj_para.text                  = an_object["substantive"].to!string.strip;
-  comp_obj_para.ocn                   = obj_cite_digits.digit;
-  comp_obj_para.obj_cite_number       = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-  comp_obj_para.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-  comp_obj_para.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
-  comp_obj_para.obj_cite_number_type  = obj_cite_digits.type;
-  comp_obj_para.indent_hang           = indent["hang_position"];
-  comp_obj_para.indent_base           = indent["base_position"];
-  comp_obj_para.bullet                = bullet;
-  comp_obj_para.anchor_tags           = anchor_tags;
-  comp_obj_para.inline_notes_reg      = substantive_obj_misc_tuple[sObj.notes_reg];
-  comp_obj_para.inline_notes_star     = substantive_obj_misc_tuple[sObj.notes_star];
-  comp_obj_para.inline_links          = substantive_obj_misc_tuple[sObj.links];
-  comp_obj_para.contains_image_without_dimensions  = substantive_obj_misc_tuple[sObj.image_no_dimensions];
-  the_document_body_section           ~= comp_obj_para;
+  comp_obj_para                                          = comp_obj_para.init;
+  comp_obj_para.typeinfo.of_part                         = "body";
+  comp_obj_para.typeinfo.of_section                      = "body";
+  comp_obj_para.typeinfo.is_of                           = "para";
+  comp_obj_para.typeinfo.is_a                            = "para";
+  comp_obj_para.text                                     = an_object["substantive"].to!string.strip;
+  comp_obj_para.node.ocn                                 = obj_cite_digits.digit;
+  comp_obj_para.node.obj_cite_number                     = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+  comp_obj_para.misc.obj_cite_number_off                 = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+  comp_obj_para.misc.obj_cite_number_bkidx               = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
+  comp_obj_para.misc.obj_cite_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_tags;
+  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.contains_image_without_dimensions    = substantive_obj_misc_tuple[sObj.image_no_dimensions];
+  the_document_body_section                              ~= comp_obj_para;
   _common_reset_(line_occur, an_object, obj_type_status);
   indent=[
     "hang_position" : 0,
@@ -1320,23 +1320,23 @@ if ((obj_type_status["heading"] == State.on)
 #+BEGIN_SRC d
 /+ unless (the_document_body_section.length == 0) ? +/
 if (the_document_body_section.length > 0) {
-  if (((the_document_body_section[$-1].is_a == "para")
-    || (the_document_body_section[$-1].is_a == "heading")
-    || (the_document_body_section[$-1].is_a == "quote")
-    || (the_document_body_section[$-1].is_a == "group")
-    || (the_document_body_section[$-1].is_a == "block")
-    || (the_document_body_section[$-1].is_a == "verse"))
+  if (((the_document_body_section[$-1].typeinfo.is_a == "para")
+    || (the_document_body_section[$-1].typeinfo.is_a == "heading")
+    || (the_document_body_section[$-1].typeinfo.is_a == "quote")
+    || (the_document_body_section[$-1].typeinfo.is_a == "group")
+    || (the_document_body_section[$-1].typeinfo.is_a == "block")
+    || (the_document_body_section[$-1].typeinfo.is_a == "verse"))
   && (the_document_body_section.length > previous_length)) {
-    if ((the_document_body_section[$-1].is_a == "heading")
-    && (the_document_body_section[$-1].heading_lev_markup < 5)) {
+    if ((the_document_body_section[$-1].typeinfo.is_a == "heading")
+    && (the_document_body_section[$-1].node.heading_lev_markup < 5)) {
       obj_type_status["biblio_section"]   = State.off;
       obj_type_status["glossary_section"] = State.off;
       obj_type_status["blurb_section"]    = State.off;
     }
-    if (the_document_body_section[$-1].is_a == "verse") {
+    if (the_document_body_section[$-1].typeinfo.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].is_a == "verse") {
+        if (the_document_body_section[i].typeinfo.is_a == "verse") {
           if ((the_document_body_section[i].text).match(
             rgx.inline_notes_delimiter_al_regular_number_note
           )) {
@@ -1406,22 +1406,22 @@ debug(endnotes) {
 #+name: abs_post
 #+BEGIN_SRC d
 if (an_object["glossary_nugget"].length == 0) {
-  comp_obj_heading_                       = comp_obj_heading_.init;
-  comp_obj_heading_.of_part               = "empty";
-  comp_obj_heading_.of_section            = "empty";
-  comp_obj_heading_.is_of                 = "para";
-  comp_obj_heading_.is_a                  = "heading";
-  comp_obj_heading_.text                  = "(skip) there is no Glossary section";
-  comp_obj_heading_.ocn                   = 0;
-  comp_obj_heading_.obj_cite_number       = "";
-  comp_obj_heading_.obj_cite_number_off   = "";
-  comp_obj_heading_.obj_cite_number_type  = 0;
-  comp_obj_heading_.marked_up_level       = "B";
-  comp_obj_heading_.heading_lev_markup    = 1;
-  comp_obj_heading_.heading_lev_collapsed = 1;
-  comp_obj_heading_.parent_ocn            = 1;
-  comp_obj_heading_.parent_lev_markup     = 0;
-  the_glossary_section                    ~= comp_obj_heading_;
+  comp_obj_heading_                            = comp_obj_heading_.init;
+  comp_obj_heading_.typeinfo.of_part           = "empty";
+  comp_obj_heading_.typeinfo.of_section        = "empty";
+  comp_obj_heading_.typeinfo.is_of             = "para";
+  comp_obj_heading_.typeinfo.is_a              = "heading";
+  comp_obj_heading_.text                       = "(skip) there is no Glossary section";
+  comp_obj_heading_.node.ocn                   = 0;
+  comp_obj_heading_.node.obj_cite_number       = "";
+  comp_obj_heading_.misc.obj_cite_number_off   = "";
+  comp_obj_heading_.misc.obj_cite_number_type  = 0;
+  comp_obj_heading_.node.marked_up_level       = "B";
+  comp_obj_heading_.node.heading_lev_markup    = 1;
+  comp_obj_heading_.node.heading_lev_collapsed = 1;
+  comp_obj_heading_.node.parent_ocn            = 1;
+  comp_obj_heading_.node.parent_lev_markup     = 0;
+  the_glossary_section                         ~= comp_obj_heading_;
 } else {
   writeln("gloss");
 }
@@ -1445,58 +1445,58 @@ auto biblio_ordered
 #+name: abs_post
 #+BEGIN_SRC d
 if (biblio_ordered.length > 0) {
-  comp_obj_heading_                       = comp_obj_heading_.init;
-  comp_obj_heading_.of_part               = "backmatter";
-  comp_obj_heading_.of_section            = "bibliography";
-  comp_obj_heading_.is_of                 = "para";
-  comp_obj_heading_.is_a                  = "heading";
-  comp_obj_heading_.text                  = "Bibliography";
-  comp_obj_heading_.ocn                   = 0;
-  comp_obj_heading_.obj_cite_number       = "";
-  comp_obj_heading_.obj_cite_number_off   = "";
-  comp_obj_heading_.obj_cite_number_type  = 0;
-  comp_obj_heading_.segment_anchor_tag    = "_part_bibliography";
-  comp_obj_heading_.marked_up_level       = "B";
-  comp_obj_heading_.heading_lev_markup    = 1;
-  comp_obj_heading_.heading_lev_collapsed = 1;
-  comp_obj_heading_.parent_ocn            = 1;
-  comp_obj_heading_.parent_lev_markup     = 0;
-  the_bibliography_section                ~= comp_obj_heading_;
-  comp_obj_heading_                       = comp_obj_heading_.init;
-  comp_obj_heading_.of_part               = "backmatter";
-  comp_obj_heading_.of_section            = "bibliography";
-  comp_obj_heading_.is_of                 = "para";
-  comp_obj_heading_.is_a                  = "heading";
-  comp_obj_heading_.text                  = "Bibliography";
-  comp_obj_heading_.ocn                   = 0;
-  comp_obj_heading_.obj_cite_number       = "";
-  comp_obj_heading_.obj_cite_number_off   = "";
-  comp_obj_heading_.obj_cite_number_type  = 0;
-  comp_obj_heading_.segment_anchor_tag    = "bibliography";
-  comp_obj_heading_.marked_up_level       = "1";
-  comp_obj_heading_.heading_lev_markup    = 4;
-  comp_obj_heading_.heading_lev_collapsed = 2;
-  comp_obj_heading_.parent_ocn            = 1;
-  comp_obj_heading_.parent_lev_markup     = 0;
-  comp_obj_heading_.anchor_tags           = ["bibliography"];
-  the_bibliography_section                ~= comp_obj_heading_;
+  comp_obj_heading_                            = comp_obj_heading_.init;
+  comp_obj_heading_.typeinfo.of_part           = "backmatter";
+  comp_obj_heading_.typeinfo.of_section        = "bibliography";
+  comp_obj_heading_.typeinfo.is_of             = "para";
+  comp_obj_heading_.typeinfo.is_a              = "heading";
+  comp_obj_heading_.text                       = "Bibliography";
+  comp_obj_heading_.node.ocn                   = 0;
+  comp_obj_heading_.node.obj_cite_number       = "";
+  comp_obj_heading_.misc.obj_cite_number_off   = "";
+  comp_obj_heading_.misc.obj_cite_number_type  = 0;
+  comp_obj_heading_.tags.segment_anchor_tag    = "_part_bibliography";
+  comp_obj_heading_.node.marked_up_level       = "B";
+  comp_obj_heading_.node.heading_lev_markup    = 1;
+  comp_obj_heading_.node.heading_lev_collapsed = 1;
+  comp_obj_heading_.node.parent_ocn            = 1;
+  comp_obj_heading_.node.parent_lev_markup     = 0;
+  the_bibliography_section                     ~= comp_obj_heading_;
+  comp_obj_heading_                            = comp_obj_heading_.init;
+  comp_obj_heading_.typeinfo.of_part           = "backmatter";
+  comp_obj_heading_.typeinfo.of_section        = "bibliography";
+  comp_obj_heading_.typeinfo.is_of             = "para";
+  comp_obj_heading_.typeinfo.is_a              = "heading";
+  comp_obj_heading_.text                       = "Bibliography";
+  comp_obj_heading_.node.ocn                   = 0;
+  comp_obj_heading_.node.obj_cite_number       = "";
+  comp_obj_heading_.misc.obj_cite_number_off   = "";
+  comp_obj_heading_.misc.obj_cite_number_type  = 0;
+  comp_obj_heading_.tags.segment_anchor_tag    = "bibliography";
+  comp_obj_heading_.node.marked_up_level       = "1";
+  comp_obj_heading_.node.heading_lev_markup    = 4;
+  comp_obj_heading_.node.heading_lev_collapsed = 2;
+  comp_obj_heading_.node.parent_ocn            = 1;
+  comp_obj_heading_.node.parent_lev_markup     = 0;
+  comp_obj_heading_.tags.anchor_tags           = ["bibliography"];
+  the_bibliography_section                     ~= comp_obj_heading_;
 } else {
-  comp_obj_heading_                       = comp_obj_heading_.init;
-  comp_obj_heading_.of_part               = "empty";
-  comp_obj_heading_.of_section            = "empty";
-  comp_obj_heading_.is_of                 = "para";
-  comp_obj_heading_.is_a                  = "heading";
-  comp_obj_heading_.text                  = "(skip) there is no Bibliography";
-  comp_obj_heading_.ocn                   = 0;
-  comp_obj_heading_.obj_cite_number       = "";
-  comp_obj_heading_.obj_cite_number_off   = "";
-  comp_obj_heading_.obj_cite_number_type  = 0;
-  comp_obj_heading_.marked_up_level       = "B";
-  comp_obj_heading_.heading_lev_markup    = 1;
-  comp_obj_heading_.heading_lev_collapsed = 1;
-  comp_obj_heading_.parent_ocn            = 1;
-  comp_obj_heading_.parent_lev_markup     = 0;
-  the_bibliography_section                ~= comp_obj_heading_;
+  comp_obj_heading_                            = comp_obj_heading_.init;
+  comp_obj_heading_.typeinfo.of_part           = "empty";
+  comp_obj_heading_.typeinfo.of_section        = "empty";
+  comp_obj_heading_.typeinfo.is_of             = "para";
+  comp_obj_heading_.typeinfo.is_a              = "heading";
+  comp_obj_heading_.text                       = "(skip) there is no Bibliography";
+  comp_obj_heading_.node.ocn                   = 0;
+  comp_obj_heading_.node.obj_cite_number       = "";
+  comp_obj_heading_.misc.obj_cite_number_off   = "";
+  comp_obj_heading_.misc.obj_cite_number_type  = 0;
+  comp_obj_heading_.node.marked_up_level       = "B";
+  comp_obj_heading_.node.heading_lev_markup    = 1;
+  comp_obj_heading_.node.heading_lev_collapsed = 1;
+  comp_obj_heading_.node.parent_ocn            = 1;
+  comp_obj_heading_.node.parent_lev_markup     = 0;
+  the_bibliography_section                     ~= comp_obj_heading_;
 }
 #+END_SRC
 
@@ -1520,21 +1520,21 @@ foreach (entry; biblio_ordered) {
     ((entry["place"].str.empty) ? "" : ", " ~ entry["place"].str),
     ((entry["url"].str.empty) ? "" : ", [" ~ entry["url"].str ~ "]"),
   );
-  comp_obj_para                       = comp_obj_para.init;
-  comp_obj_para.of_part               = "backmatter";
-  comp_obj_para.of_section            = "bibliography";
-  comp_obj_para.is_of                 = "para";
-  comp_obj_para.is_a                  = "bibliography";
-  comp_obj_para.text                  = out_.to!string.strip;
-  comp_obj_para.ocn                   = 0;
-  comp_obj_para.obj_cite_number       = "";
-  comp_obj_para.obj_cite_number_off   = "";
-  comp_obj_para.obj_cite_number_type  = 0;
-  comp_obj_para.indent_hang           = 0;
-  comp_obj_para.indent_base           = 1;
-  comp_obj_para.bullet                = bullet;
-  comp_obj_para.anchor_tags           = anchor_tags;
-  the_bibliography_section            ~= comp_obj_para;
+  comp_obj_para                           = comp_obj_para.init;
+  comp_obj_para.typeinfo.of_part          = "backmatter";
+  comp_obj_para.typeinfo.of_section       = "bibliography";
+  comp_obj_para.typeinfo.is_of            = "para";
+  comp_obj_para.typeinfo.is_a             = "bibliography";
+  comp_obj_para.text                      = out_.to!string.strip;
+  comp_obj_para.node.ocn                  = 0;
+  comp_obj_para.node.obj_cite_number      = "";
+  comp_obj_para.misc.obj_cite_number_off  = "";
+  comp_obj_para.misc.obj_cite_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_tags;
+  the_bibliography_section                ~= comp_obj_para;
 }
 #+END_SRC
 
@@ -1606,23 +1606,23 @@ debug(bookindex) {
 #+name: abs_post
 #+BEGIN_SRC d
 if (an_object["blurb_nugget"].length == 0) {
-  comp_obj_heading_                       = comp_obj_heading_.init;
-  comp_obj_heading_.of_part               = "empty";
-  comp_obj_heading_.of_section            = "empty";
-  comp_obj_heading_.is_of                 = "para";
-  comp_obj_heading_.is_a                  = "heading";
-  comp_obj_heading_.text                  = "(skip) there is no Blurb section";
-  comp_obj_heading_.ocn                   = 0;
-  comp_obj_para.obj_cite_number           = "";
-  comp_obj_para.obj_cite_number_off       = "";
-  comp_obj_para.obj_cite_number_type      = 0;
-  comp_obj_heading_.segment_anchor_tag    = "";
-  comp_obj_heading_.marked_up_level       = "B";
-  comp_obj_heading_.heading_lev_markup    = 1;
-  comp_obj_heading_.heading_lev_collapsed = 1;
-  comp_obj_heading_.parent_ocn            = 1;
-  comp_obj_heading_.parent_lev_markup     = 0;
-  the_blurb_section                       ~= comp_obj_heading_;
+  comp_obj_heading_                            = comp_obj_heading_.init;
+  comp_obj_heading_.typeinfo.of_part           = "empty";
+  comp_obj_heading_.typeinfo.of_section        = "empty";
+  comp_obj_heading_.typeinfo.is_of             = "para";
+  comp_obj_heading_.typeinfo.is_a              = "heading";
+  comp_obj_heading_.text                       = "(skip) there is no Blurb section";
+  comp_obj_heading_.node.ocn                   = 0;
+  comp_obj_para.node.obj_cite_number           = "";
+  comp_obj_para.misc.obj_cite_number_off       = "";
+  comp_obj_para.misc.obj_cite_number_type      = 0;
+  comp_obj_heading_.tags.segment_anchor_tag    = "";
+  comp_obj_heading_.node.marked_up_level       = "B";
+  comp_obj_heading_.node.heading_lev_markup    = 1;
+  comp_obj_heading_.node.heading_lev_collapsed = 1;
+  comp_obj_heading_.node.parent_ocn            = 1;
+  comp_obj_heading_.node.parent_lev_markup     = 0;
+  the_blurb_section                            ~= comp_obj_heading_;
 }
 debug(blurb) {
   foreach (blurb; the_blurb_section) {
@@ -1639,18 +1639,18 @@ indent=[
   "hang_position" : 1,
   "base_position" : 1,
 ];
-comp_obj_toc                       = comp_obj_toc.init;
-comp_obj_toc.of_part               = "frontmatter";
-comp_obj_toc.of_section            = "toc";
-comp_obj_toc.is_of                 = "para";
-comp_obj_toc.is_a                  = "toc";
-comp_obj_toc.ocn                   = 0;
-comp_obj_toc.obj_cite_number       = "";
-comp_obj_toc.obj_cite_number_off   = "";
-comp_obj_toc.obj_cite_number_type  = 0;
-comp_obj_toc.indent_hang           = indent["hang_position"];
-comp_obj_toc.indent_base           = indent["base_position"];
-comp_obj_toc.bullet                = false;
+comp_obj_toc                           = comp_obj_toc.init;
+comp_obj_toc.typeinfo.of_part          = "frontmatter";
+comp_obj_toc.typeinfo.of_section       = "toc";
+comp_obj_toc.typeinfo.is_of            = "para";
+comp_obj_toc.typeinfo.is_a             = "toc";
+comp_obj_toc.node.ocn                  = 0;
+comp_obj_toc.node.obj_cite_number      = "";
+comp_obj_toc.misc.obj_cite_number_off  = "";
+comp_obj_toc.misc.obj_cite_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_endnotes_section.length > 1) {
   toc_txt_ = format(
     "{ %s }%s%s%s",
@@ -1661,7 +1661,7 @@ if (the_endnotes_section.length > 1) {
   );
   toc_txt_= munge.url_links(toc_txt_);
   comp_obj_toc.text                       = toc_txt_.to!string.strip;
-  comp_obj_toc.inline_links               = true;
+  comp_obj_toc.has.inline_links           = true;
   the_table_of_contents_section["seg"]    ~= comp_obj_toc;
 }
 if (the_glossary_section.length > 1) {
@@ -1674,7 +1674,7 @@ if (the_glossary_section.length > 1) {
   );
   toc_txt_= munge.url_links(toc_txt_);
   comp_obj_toc.text                       = toc_txt_.to!string.strip;
-  comp_obj_toc.inline_links               = true;
+  comp_obj_toc.has.inline_links           = true;
   the_table_of_contents_section["seg"]    ~= comp_obj_toc;
   toc_txt_ = format(
     "{ %s }#%s",
@@ -1683,7 +1683,7 @@ if (the_glossary_section.length > 1) {
   );
   toc_txt_= munge.url_links(toc_txt_);
   comp_obj_toc.text                       = toc_txt_.to!string.strip;
-  comp_obj_toc.inline_links               = true;
+  comp_obj_toc.has.inline_links           = true;
   the_table_of_contents_section["scroll"] ~= comp_obj_toc;
 }
 if (the_bibliography_section.length > 1){
@@ -1696,7 +1696,7 @@ if (the_bibliography_section.length > 1){
   );
   toc_txt_= munge.url_links(toc_txt_);
   comp_obj_toc.text                       = toc_txt_.to!string.strip;
-  comp_obj_toc.inline_links               = true;
+  comp_obj_toc.has.inline_links           = true;
   the_table_of_contents_section["seg"]    ~= comp_obj_toc;
 
   toc_txt_ = format(
@@ -1706,7 +1706,7 @@ if (the_bibliography_section.length > 1){
   );
   toc_txt_= munge.url_links(toc_txt_);
   comp_obj_toc.text                       = toc_txt_.to!string.strip;
-  comp_obj_toc.inline_links               = true;
+  comp_obj_toc.has.inline_links           = true;
   the_table_of_contents_section["scroll"] ~= comp_obj_toc;
 }
 if (the_bookindex_section["seg"].length > 1) {
@@ -1719,7 +1719,7 @@ if (the_bookindex_section["seg"].length > 1) {
   );
   toc_txt_= munge.url_links(toc_txt_);
   comp_obj_toc.text                       = toc_txt_.to!string.strip;
-  comp_obj_toc.inline_links               = true;
+  comp_obj_toc.has.inline_links           = true;
   the_table_of_contents_section["seg"]    ~= comp_obj_toc;
 }
 if (the_bookindex_section["scroll"].length > 1) {
@@ -1730,7 +1730,7 @@ if (the_bookindex_section["scroll"].length > 1) {
   );
   toc_txt_= munge.url_links(toc_txt_);
   comp_obj_toc.text                       = toc_txt_.to!string.strip;
-  comp_obj_toc.inline_links               = true;
+  comp_obj_toc.has.inline_links           = true;
   the_table_of_contents_section["scroll"] ~= comp_obj_toc;
 }
 if (the_blurb_section.length > 1) {
@@ -1743,7 +1743,7 @@ if (the_blurb_section.length > 1) {
   );
   toc_txt_= munge.url_links(toc_txt_);
   comp_obj_toc.text                       = toc_txt_.to!string.strip;
-  comp_obj_toc.inline_links               = true;
+  comp_obj_toc.has.inline_links           = true;
   the_table_of_contents_section["seg"]    ~= comp_obj_toc;
   toc_txt_ = format(
     "{ %s }#%s",
@@ -1751,7 +1751,7 @@ if (the_blurb_section.length > 1) {
     "blurb",                  // _anchor_tag
   );
   toc_txt_= munge.url_links(toc_txt_);
-  comp_obj_toc.inline_links               = true;
+  comp_obj_toc.has.inline_links           = true;
   comp_obj_toc.text                       = toc_txt_.to!string.strip;
   the_table_of_contents_section["scroll"] ~= comp_obj_toc;
 }
@@ -1762,7 +1762,7 @@ debug(toc) {
     the_table_of_contents_section["seg"].length
   );
   foreach (toc_linked_heading; the_table_of_contents_section["seg"]) {
-    writeln(mkup.indent_by_spaces_provided(toc_linked_heading.indent_hang), toc_linked_heading.text);
+    writeln(mkup.indent_by_spaces_provided(toc_linked_heading.attrib.indent_hang), toc_linked_heading.text);
   }
 }
 debug(tocscroll) {
@@ -1772,7 +1772,7 @@ debug(tocscroll) {
     the_table_of_contents_section["seg"].length
   );
   foreach (toc_linked_heading; the_table_of_contents_section["scroll"]) {
-    writeln(mkup.indent_by_spaces_provided(toc_linked_heading.indent_hang), toc_linked_heading.text);
+    writeln(mkup.indent_by_spaces_provided(toc_linked_heading.attrib.indent_hang), toc_linked_heading.text);
   }
 }
 #+END_SRC
@@ -1808,8 +1808,8 @@ if (the_endnotes_section.length > 1) {
   html_segnames ~= "endnotes";
   html_segnames_ptr = html_segnames_ptr_cntr;
   foreach (ref section; the_endnotes_section) {
-    if (section.heading_lev_markup == 4) {
-      section.ptr_html_segnames = html_segnames_ptr;
+    if (section.node.heading_lev_markup == 4) {
+      section.ptr.html_segnames = html_segnames_ptr;
       break;
     }
   }
@@ -1825,8 +1825,8 @@ if (the_glossary_section.length > 1) {
   html_segnames ~= "glossary";
   html_segnames_ptr = html_segnames_ptr_cntr;
   foreach (ref section; the_glossary_section) {
-    if (section.heading_lev_markup == 4) {
-      section.ptr_html_segnames = html_segnames_ptr;
+    if (section.node.heading_lev_markup == 4) {
+      section.ptr.html_segnames = html_segnames_ptr;
       break;
     }
   }
@@ -1842,8 +1842,8 @@ if (the_bibliography_section.length > 1) {
   html_segnames ~= "bibliography";
   html_segnames_ptr = html_segnames_ptr_cntr;
   foreach (ref section; the_bibliography_section) {
-    if (section.heading_lev_markup == 4) {
-      section.ptr_html_segnames = html_segnames_ptr;
+    if (section.node.heading_lev_markup == 4) {
+      section.ptr.html_segnames = html_segnames_ptr;
       break;
     }
   }
@@ -1859,14 +1859,14 @@ if (the_bookindex_section["scroll"].length > 1) {
   html_segnames ~= "bookindex";
   html_segnames_ptr = html_segnames_ptr_cntr;
   foreach (ref section; the_bookindex_section["scroll"]) {
-    if (section.heading_lev_markup == 4) {
-      section.ptr_html_segnames = html_segnames_ptr;
+    if (section.node.heading_lev_markup == 4) {
+      section.ptr.html_segnames = html_segnames_ptr;
       break;
     }
   }
   foreach (ref section; the_bookindex_section["seg"]) {
-    if (section.heading_lev_markup == 4) {
-      section.ptr_html_segnames = html_segnames_ptr;
+    if (section.node.heading_lev_markup == 4) {
+      section.ptr.html_segnames = html_segnames_ptr;
       break;
     }
   }
@@ -1882,8 +1882,8 @@ if (the_blurb_section.length > 1) {
   html_segnames ~= "blurb";
   html_segnames_ptr = html_segnames_ptr_cntr;
   foreach (ref section; the_blurb_section) {
-    if (section.heading_lev_markup == 4) {
-      section.ptr_html_segnames = html_segnames_ptr;
+    if (section.node.heading_lev_markup == 4) {
+      section.ptr.html_segnames = html_segnames_ptr;
       break;
     }
   }
@@ -1949,7 +1949,7 @@ string[] segnames_0_4;
 #+name: abs_post
 #+BEGIN_SRC d
 auto _image_dimensions(M,O)(M manifest_matter, O obj) {
-  if (obj.contains_image_without_dimensions) {
+  if (obj.has.contains_image_without_dimensions) {
     import std.math;
     import imageformats;
     int w, h, chans;
@@ -1989,21 +1989,21 @@ auto _image_dimensions(M,O)(M manifest_matter, O obj) {
 #+name: abs_post
 #+BEGIN_SRC d
 foreach (ref obj; the_document_head_section) {
-  if (obj.is_a == "heading") {
+  if (obj.typeinfo.is_a == "heading") {
     debug(dom) {
       writeln(obj.text);
     }
-    if (obj.heading_lev_markup <= 4) {
-      segnames_0_4 ~= obj.segment_anchor_tag;
+    if (obj.node.heading_lev_markup <= 4) {
+      segnames_0_4 ~= obj.tags.segment_anchor_tag;
     }
-    if (obj.heading_lev_markup == 0) {
+    if (obj.node.heading_lev_markup == 0) {
       /+ TODO second hit (of two) with same assertion failure, check, fix and reinstate
-      assert( obj.ocn == 1,
-        "Title OCN should be 1 not: " ~ obj.ocn.to!string); // bug introduced 0.18.1
+      assert( obj.node.ocn == 1,
+        "Title OCN should be 1 not: " ~ obj.node.ocn.to!string); // bug introduced 0.18.1
       +/
-      obj.ocn = 1;
-      obj.obj_cite_number = "1";
-      obj.obj_cite_number_type = OCNtype.ocn;
+      obj.node.ocn = 1;
+      obj.node.obj_cite_number = "1";
+      obj.misc.obj_cite_number_type = OCNtype.ocn;
     }
     /+ dom structure (marked up & collapsed) +/
     if ((opt_action.html)
@@ -2013,8 +2013,8 @@ foreach (ref obj; the_document_head_section) {
     || (opt_action.sqlite_discrete)
     || (opt_action.sqlite_update)
     || (opt_action.postgresql)) {
-      obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.heading_lev_markup);
-      obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.heading_lev_collapsed);
+      obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.node.heading_lev_markup);
+      obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.node.heading_lev_collapsed);
     }
     obj = obj_heading_ancestors(obj, lv_ancestors_txt);
   }
@@ -2030,13 +2030,13 @@ if (the_table_of_contents_section["scroll"].length > 1) {
   dom_markedup_buffer = dom_markedup.dup;
   dom_collapsed_buffer = dom_collapsed.dup;
   foreach (ref obj; the_table_of_contents_section["scroll"]) {
-    if (obj.is_a == "heading") {
-      if (obj.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.segment_anchor_tag;
-        if (obj.heading_lev_markup == 4) {
-          obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
-          assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames],
-          obj.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr_html_segnames]);
+    if (obj.typeinfo.is_a == "heading") {
+      if (obj.node.heading_lev_markup <= 4) {
+        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        if (obj.node.heading_lev_markup == 4) {
+          obj.tags.segname_next = html_segnames[obj.ptr.html_segnames + 1];
+          assert(obj.tags.segment_anchor_tag == html_segnames[obj.ptr.html_segnames],
+          obj.tags.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr.html_segnames]);
         }
       }
       /+ dom structure (marked up & collapsed) +/
@@ -2047,8 +2047,8 @@ if (the_table_of_contents_section["scroll"].length > 1) {
       || (opt_action.sqlite_discrete)
       || (opt_action.sqlite_update)
       || (opt_action.postgresql)) {
-        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.heading_lev_markup);
-        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.heading_lev_collapsed);
+        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.node.heading_lev_markup);
+        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.node.heading_lev_collapsed);
       }
       obj = obj_heading_ancestors(obj, lv_ancestors_txt);
     }
@@ -2057,24 +2057,24 @@ if (the_table_of_contents_section["scroll"].length > 1) {
   dom_markedup = dom_markedup_buffer.dup;
   dom_collapsed = dom_collapsed_buffer.dup;
   foreach (ref obj; the_table_of_contents_section["seg"]) {
-    if (obj.is_a == "heading") {
+    if (obj.typeinfo.is_a == "heading") {
       debug(dom) {
         writeln(obj.text);
       }
-      if (obj.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.segment_anchor_tag;
-        if (obj.heading_lev_markup == 4) {
-          obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
-          assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames],
-          obj.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr_html_segnames]);
+      if (obj.node.heading_lev_markup <= 4) {
+        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        if (obj.node.heading_lev_markup == 4) {
+          obj.tags.segname_next = html_segnames[obj.ptr.html_segnames + 1];
+          assert(obj.tags.segment_anchor_tag == html_segnames[obj.ptr.html_segnames],
+          obj.tags.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr.html_segnames]);
         }
       }
       if ((opt_action.html)
       || (opt_action.html_scroll)
       || (opt_action.html_seg)
       || (opt_action.epub)) {
-        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.heading_lev_markup);
-        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.heading_lev_collapsed);
+        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.node.heading_lev_markup);
+        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.node.heading_lev_collapsed);
       }
       obj = obj_heading_ancestors(obj, lv_ancestors_txt);
     }
@@ -2089,20 +2089,20 @@ if (the_table_of_contents_section["scroll"].length > 1) {
 /+ multiple 1~ levels, loop through document body +/
 if (the_document_body_section.length > 1) {
   foreach (ref obj; the_document_body_section) {
-    if (obj.is_a == "heading") {
+    if (obj.typeinfo.is_a == "heading") {
       debug(dom) {
         writeln(obj.text);
       }
-      if (obj.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.segment_anchor_tag;
-        if (obj.heading_lev_markup == 4) {
-          obj.lev4_subtoc = lev4_subtoc[obj.segment_anchor_tag];
-          obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-          if (html_segnames.length > obj.ptr_html_segnames + 1) {
-            obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
+      if (obj.node.heading_lev_markup <= 4) {
+        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        if (obj.node.heading_lev_markup == 4) {
+          obj.tags.lev4_subtoc = lev4_subtoc[obj.tags.segment_anchor_tag];
+          obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
+          if (html_segnames.length > obj.ptr.html_segnames + 1) {
+            obj.tags.segname_next = html_segnames[obj.ptr.html_segnames + 1];
           }
-          assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames],
-          obj.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr_html_segnames]);
+          assert(obj.tags.segment_anchor_tag == html_segnames[obj.ptr.html_segnames],
+          obj.tags.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr.html_segnames]);
         }
       }
       /+ dom structure (marked up & collapsed) +/
@@ -2113,11 +2113,11 @@ if (the_document_body_section.length > 1) {
       || (opt_action.sqlite_discrete)
       || (opt_action.sqlite_update)
       || (opt_action.postgresql)) {
-        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.heading_lev_markup);
-        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.heading_lev_collapsed);
+        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.node.heading_lev_markup);
+        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.node.heading_lev_collapsed);
       }
       obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-    } else if (obj.is_a == "para") {
+    } else if (obj.typeinfo.is_a == "para") {
        _images ~= extract_images(obj.text);
        obj = _image_dimensions(manifest_matter, obj);
     }
@@ -2139,22 +2139,22 @@ if (the_endnotes_section.length > 1) {
   dom_markedup = dom_markedup_buffer.dup;
   dom_collapsed = dom_collapsed_buffer.dup;
   foreach (ref obj; the_endnotes_section) {
-    if (obj.is_a == "heading") {
+    if (obj.typeinfo.is_a == "heading") {
       debug(dom) {
         writeln(obj.text);
       }
       obj_cite_digits = ocn_emit(OCNstatus.on);
-      obj.ocn = obj_cite_digits.digit;
-      obj.obj_cite_number = obj_cite_digits.on.to!string;
-      if (obj.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.segment_anchor_tag;
-        if (obj.heading_lev_markup == 4) {
-          obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-          if (html_segnames.length > obj.ptr_html_segnames + 1) {
-            obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
+      obj.node.ocn = obj_cite_digits.digit;
+      obj.node.obj_cite_number = obj_cite_digits.on.to!string;
+      if (obj.node.heading_lev_markup <= 4) {
+        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        if (obj.node.heading_lev_markup == 4) {
+          obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
+          if (html_segnames.length > obj.ptr.html_segnames + 1) {
+            obj.tags.segname_next = html_segnames[obj.ptr.html_segnames + 1];
           }
-          assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames],
-          obj.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr_html_segnames]);
+          assert(obj.tags.segment_anchor_tag == html_segnames[obj.ptr.html_segnames],
+          obj.tags.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr.html_segnames]);
         }
       }
       /+ dom structure (marked up & collapsed) +/
@@ -2165,8 +2165,8 @@ if (the_endnotes_section.length > 1) {
       || (opt_action.sqlite_discrete)
       || (opt_action.sqlite_update)
       || (opt_action.postgresql)) {
-        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.heading_lev_markup);
-        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.heading_lev_collapsed);
+        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.node.heading_lev_markup);
+        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.node.heading_lev_collapsed);
       }
       obj = obj_heading_ancestors(obj, lv_ancestors_txt);
     }
@@ -2183,22 +2183,22 @@ if (the_endnotes_section.length > 1) {
 /+ optional only one 1~ level +/
 if (the_glossary_section.length > 1) {
   foreach (ref obj; the_glossary_section) {
-    if (obj.is_a == "heading") {
+    if (obj.typeinfo.is_a == "heading") {
       debug(dom) {
         writeln(obj.text);
       }
       obj_cite_digits = ocn_emit(OCNstatus.on);
-      obj.ocn = obj_cite_digits.digit;
-      obj.obj_cite_number = obj_cite_digits.on.to!string;
-      if (obj.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.segment_anchor_tag;
-        if (obj.heading_lev_markup == 4) {
-          obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-          if (html_segnames.length > obj.ptr_html_segnames + 1) {
-            obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
+      obj.node.ocn = obj_cite_digits.digit;
+      obj.node.obj_cite_number = obj_cite_digits.on.to!string;
+      if (obj.node.heading_lev_markup <= 4) {
+        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        if (obj.node.heading_lev_markup == 4) {
+          obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
+          if (html_segnames.length > obj.ptr.html_segnames + 1) {
+            obj.tags.segname_next = html_segnames[obj.ptr.html_segnames + 1];
           }
-          assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames],
-          obj.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr_html_segnames]);
+          assert(obj.tags.segment_anchor_tag == html_segnames[obj.ptr.html_segnames],
+          obj.tags.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr.html_segnames]);
         }
       }
       /+ dom structure (marked up & collapsed) +/
@@ -2209,14 +2209,14 @@ if (the_glossary_section.length > 1) {
       || (opt_action.sqlite_discrete)
       || (opt_action.sqlite_update)
       || (opt_action.postgresql)) {
-        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.heading_lev_markup);
-        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.heading_lev_collapsed);
+        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.node.heading_lev_markup);
+        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.node.heading_lev_collapsed);
       }
       obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-    } else if (obj.is_a == "glossary") {
+    } else if (obj.typeinfo.is_a == "glossary") {
       obj_cite_digits = ocn_emit(OCNstatus.on);
-      obj.ocn = obj_cite_digits.digit;
-      obj.obj_cite_number = obj_cite_digits.on.to!string;
+      obj.node.ocn = obj_cite_digits.digit;
+      obj.node.obj_cite_number = obj_cite_digits.on.to!string;
     }
   }
 }
@@ -2231,22 +2231,22 @@ if (the_glossary_section.length > 1) {
 /+ optional only one 1~ level +/
 if (the_bibliography_section.length > 1) {
   foreach (ref obj; the_bibliography_section) {
-    if (obj.is_a == "heading") {
+    if (obj.typeinfo.is_a == "heading") {
       debug(dom) {
         writeln(obj.text);
       }
       obj_cite_digits = ocn_emit(OCNstatus.on);
-      obj.ocn = obj_cite_digits.digit;
-      obj.obj_cite_number = obj_cite_digits.on.to!string; // check
-      if (obj.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.segment_anchor_tag;
-        if (obj.heading_lev_markup == 4) {
-          obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-          if (html_segnames.length > obj.ptr_html_segnames + 1) {
-            obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
+      obj.node.ocn = obj_cite_digits.digit;
+      obj.node.obj_cite_number = obj_cite_digits.on.to!string; // check
+      if (obj.node.heading_lev_markup <= 4) {
+        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        if (obj.node.heading_lev_markup == 4) {
+          obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
+          if (html_segnames.length > obj.ptr.html_segnames + 1) {
+            obj.tags.segname_next = html_segnames[obj.ptr.html_segnames + 1];
           }
-          assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames],
-          obj.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr_html_segnames]);
+          assert(obj.tags.segment_anchor_tag == html_segnames[obj.ptr.html_segnames],
+          obj.tags.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr.html_segnames]);
         }
       }
       /+ dom structure (marked up & collapsed) +/
@@ -2257,14 +2257,14 @@ if (the_bibliography_section.length > 1) {
       || (opt_action.sqlite_discrete)
       || (opt_action.sqlite_update)
       || (opt_action.postgresql)) {
-        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.heading_lev_markup);
-        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.heading_lev_collapsed);
+        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.node.heading_lev_markup);
+        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.node.heading_lev_collapsed);
       }
       obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-    } else if (obj.is_a == "bibliography") {
+    } else if (obj.typeinfo.is_a == "bibliography") {
       obj_cite_digits = ocn_emit(OCNstatus.on);
-      obj.ocn = obj_cite_digits.on;
-      obj.obj_cite_number = obj_cite_digits.on.to!string;
+      obj.node.ocn = obj_cite_digits.on;
+      obj.node.obj_cite_number = obj_cite_digits.on.to!string;
     }
   }
 }
@@ -2285,21 +2285,21 @@ if (the_bookindex_section["scroll"].length > 1) {
   dom_markedup_buffer = dom_markedup.dup;
   dom_collapsed_buffer = dom_collapsed.dup;
   foreach (ref obj; the_bookindex_section["scroll"]) {
-    if (obj.is_a == "heading") {
+    if (obj.typeinfo.is_a == "heading") {
       debug(dom) {
       }
       obj_cite_digits = ocn_emit(OCNstatus.on);
-      obj.ocn = obj_cite_digits.on;
-      obj.obj_cite_number = obj_cite_digits.on.to!string;
-      if (obj.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.segment_anchor_tag;
-        if (obj.heading_lev_markup == 4) {
-          obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-          if (html_segnames.length > obj.ptr_html_segnames + 1) {
-            obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
+      obj.node.ocn = obj_cite_digits.on;
+      obj.node.obj_cite_number = obj_cite_digits.on.to!string;
+      if (obj.node.heading_lev_markup <= 4) {
+        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        if (obj.node.heading_lev_markup == 4) {
+          obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
+          if (html_segnames.length > obj.ptr.html_segnames + 1) {
+            obj.tags.segname_next = html_segnames[obj.ptr.html_segnames + 1];
           }
-          assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames],
-          obj.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr_html_segnames]);
+          assert(obj.tags.segment_anchor_tag == html_segnames[obj.ptr.html_segnames],
+          obj.tags.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr.html_segnames]);
         }
       }
       /+ dom structure (marked up & collapsed) +/
@@ -2310,36 +2310,36 @@ if (the_bookindex_section["scroll"].length > 1) {
       || (opt_action.sqlite_discrete)
       || (opt_action.sqlite_update)
       || (opt_action.postgresql)) {
-        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.heading_lev_markup);
-        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.heading_lev_collapsed);
+        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.node.heading_lev_markup);
+        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.node.heading_lev_collapsed);
       }
       obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-    } else if (obj.is_a == "bookindex") {
+    } else if (obj.typeinfo.is_a == "bookindex") {
       obj_cite_digits = ocn_emit(OCNstatus.bkidx);
-      obj.ocn = obj_cite_digits.digit;
-      obj.obj_cite_number_bkidx = obj_cite_digits.bkidx.to!string;
-      obj.obj_cite_number_type = OCNtype.bkidx;
+      obj.node.ocn = obj_cite_digits.digit;
+      obj.misc.obj_cite_number_bkidx = obj_cite_digits.bkidx.to!string;
+      obj.misc.obj_cite_number_type = OCNtype.bkidx;
     }
   }
   /+ seg +/
   dom_markedup = dom_markedup_buffer.dup;
   dom_collapsed = dom_collapsed_buffer.dup;
   foreach (ref obj; the_bookindex_section["seg"]) {
-    if (obj.is_a == "heading") {
+    if (obj.typeinfo.is_a == "heading") {
       debug(dom) {
         writeln(obj.text);
       }
-      obj.ocn = ++ocn_;
-      obj.obj_cite_number = obj.ocn.to!string;
-      if (obj.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.segment_anchor_tag;
-        if (obj.heading_lev_markup == 4) {
-          obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-          if (html_segnames.length > obj.ptr_html_segnames + 1) {
-            obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
+      obj.node.ocn = ++ocn_;
+      obj.node.obj_cite_number = obj.node.ocn.to!string;
+      if (obj.node.heading_lev_markup <= 4) {
+        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        if (obj.node.heading_lev_markup == 4) {
+          obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
+          if (html_segnames.length > obj.ptr.html_segnames + 1) {
+            obj.tags.segname_next = html_segnames[obj.ptr.html_segnames + 1];
           }
-          assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames],
-          obj.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr_html_segnames]);
+          assert(obj.tags.segment_anchor_tag == html_segnames[obj.ptr.html_segnames],
+          obj.tags.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr.html_segnames]);
         }
       }
       /+ dom structure (marked up & collapsed) +/
@@ -2350,14 +2350,14 @@ if (the_bookindex_section["scroll"].length > 1) {
       || (opt_action.sqlite_discrete)
       || (opt_action.sqlite_update)
       || (opt_action.postgresql)) {
-        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.heading_lev_markup);
-        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.heading_lev_collapsed);
+        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.node.heading_lev_markup);
+        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.node.heading_lev_collapsed);
       }
       obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-    } else if (obj.is_a == "bookindex") {
+    } else if (obj.typeinfo.is_a == "bookindex") {
       ocn_bidx_ = ++ocn_bkidx_;
-      obj.obj_cite_number_bkidx = ocn_bidx_.to!string; // FIX need to distinguish from regular ocn
-      obj.obj_cite_number_type = OCNtype.bkidx;
+      obj.misc.obj_cite_number_bkidx = ocn_bidx_.to!string; // FIX need to distinguish from regular ocn
+      obj.misc.obj_cite_number_type = OCNtype.bkidx;
     }
   }
   /+ TODO assert failure, reinstate
@@ -2374,22 +2374,22 @@ if (the_bookindex_section["scroll"].length > 1) {
 /+ optional only one 1~ level +/
 if (the_blurb_section.length > 1) {
   foreach (ref obj; the_blurb_section) {
-    if (obj.is_a == "heading") {
+    if (obj.typeinfo.is_a == "heading") {
       debug(dom) {
         writeln(obj.text);
       }
       obj_cite_digits = ocn_emit(OCNstatus.on);
-      obj.ocn = obj_cite_digits.on;
-      obj.obj_cite_number = obj_cite_digits.on.to!string;
-      if (obj.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.segment_anchor_tag;
-        if (obj.heading_lev_markup == 4) {
-          obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-          if (html_segnames.length > obj.ptr_html_segnames + 1) {
-            obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
+      obj.node.ocn = obj_cite_digits.on;
+      obj.node.obj_cite_number = obj_cite_digits.on.to!string;
+      if (obj.node.heading_lev_markup <= 4) {
+        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        if (obj.node.heading_lev_markup == 4) {
+          obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
+          if (html_segnames.length > obj.ptr.html_segnames + 1) {
+            obj.tags.segname_next = html_segnames[obj.ptr.html_segnames + 1];
           }
-          assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames],
-          obj.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr_html_segnames]);
+          assert(obj.tags.segment_anchor_tag == html_segnames[obj.ptr.html_segnames],
+          obj.tags.segment_anchor_tag ~ "!=" ~ html_segnames[obj.ptr.html_segnames]);
         }
       }
       /+ dom structure (marked up & collapsed) +/
@@ -2400,14 +2400,14 @@ if (the_blurb_section.length > 1) {
       || (opt_action.sqlite_discrete)
       || (opt_action.sqlite_update)
       || (opt_action.postgresql)) {
-        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.heading_lev_markup);
-        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.heading_lev_collapsed);
+        obj = obj_dom_structure_set_markup_tags(obj, dom_markedup, obj.node.heading_lev_markup);
+        obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.node.heading_lev_collapsed);
       }
       obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-    } else if (obj.is_a == "blurb") {
+    } else if (obj.typeinfo.is_a == "blurb") {
       obj_cite_digits = ocn_emit(OCNstatus.off);
-      obj.obj_cite_number_off  = obj_cite_digits.off.to!string;
-      obj.obj_cite_number_type = OCNtype.non;
+      obj.misc.obj_cite_number_off  = obj_cite_digits.off.to!string;
+      obj.misc.obj_cite_number_type = OCNtype.non;
     }
   }
 }
@@ -2420,30 +2420,30 @@ if (the_blurb_section.length > 1) {
   /+ TODO
     - note create/insert heading object sole purpose eof close all open tags
       sort out:
-      - obj.dom_markedup = dom_markedup;
-      - obj.dom_collapsed = dom_collapsed;
+      - obj.node.dom_markedup = dom_markedup;
+      - obj.node.dom_collapsed = dom_collapsed;
   +/
-comp_obj_heading_                       = comp_obj_heading_.init;
-comp_obj_heading_.of_part               = "empty";
-comp_obj_heading_.of_section            = "empty";
-comp_obj_heading_.is_of                 = "para";
-comp_obj_heading_.is_a                  = "heading";
-comp_obj_heading_.ocn                   = 0;
-comp_obj_para.obj_cite_number           = "";
-comp_obj_para.obj_cite_number_off       = "";
-comp_obj_para.obj_cite_number_type      = 0;
-comp_obj_heading_.segment_anchor_tag    = "";
-comp_obj_heading_.marked_up_level       = "";
-comp_obj_heading_.heading_lev_markup    = 9;
-comp_obj_heading_.heading_lev_collapsed = 9;
-comp_obj_heading_.parent_ocn            = 0;
-comp_obj_heading_.parent_lev_markup     = 0;
-comp_obj_heading_.dom_markedup          = dom_markedup.dup;
-comp_obj_heading_.dom_collapsed         = dom_collapsed.dup;
+comp_obj_heading_                            = comp_obj_heading_.init;
+comp_obj_heading_.typeinfo.of_part           = "empty";
+comp_obj_heading_.typeinfo.of_section        = "empty";
+comp_obj_heading_.typeinfo.is_of             = "para";
+comp_obj_heading_.typeinfo.is_a              = "heading";
+comp_obj_heading_.node.ocn                   = 0;
+comp_obj_para.node.obj_cite_number           = "";
+comp_obj_para.misc.obj_cite_number_off       = "";
+comp_obj_para.misc.obj_cite_number_type      = 0;
+comp_obj_heading_.tags.segment_anchor_tag    = "";
+comp_obj_heading_.node.marked_up_level       = "";
+comp_obj_heading_.node.heading_lev_markup    = 9;
+comp_obj_heading_.node.heading_lev_collapsed = 9;
+comp_obj_heading_.node.parent_ocn            = 0;
+comp_obj_heading_.node.parent_lev_markup     = 0;
+comp_obj_heading_.node.dom_markedup          = dom_markedup.dup;
+comp_obj_heading_.node.dom_collapsed         = dom_collapsed.dup;
 comp_obj_heading_ = obj_dom_structure_set_markup_tags(comp_obj_heading_, dom_markedup, 0);
 comp_obj_heading_ = obj_dom_set_collapsed_tags(comp_obj_heading_, dom_collapsed, 0);
 comp_obj_heading_ = obj_heading_ancestors(comp_obj_heading_, lv_ancestors_txt);
-// the_dom_tail_section                    ~= comp_obj_heading_; // remove tail for now, decide on later
+// the_dom_tail_section                      ~= comp_obj_heading_; // remove tail for now, decide on later
 #+END_SRC
 
 ** 4. _return document tuple_                                           :post:
@@ -2536,16 +2536,16 @@ destroy(the_blurb_section);
 destroy(html_segnames);
 destroy(bookindex_unordered_hashes);
 destroy(an_object);
-biblio_arr_json = [];
-obj_cite_digits=ocn_emit(OCNstatus.reset);
-obj_cite_digit_=0;
-html_segnames_ptr=0;
-html_segnames_ptr_cntr=0;
-content_non_header = "8";
-dom_markedup = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-dom_markedup_buffer = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-dom_collapsed = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-dom_collapsed_buffer = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
+obj_cite_digits        = ocn_emit(OCNstatus.reset);
+biblio_arr_json        = [];
+obj_cite_digit_        = 0;
+html_segnames_ptr      = 0;
+html_segnames_ptr_cntr = 0;
+content_non_header     = "8";
+dom_markedup           = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
+dom_markedup_buffer    = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
+dom_collapsed          = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
+dom_collapsed_buffer   = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
 #+END_SRC
 
 *** [#A] _return document tuple_                               :return:tuple:
@@ -3395,19 +3395,19 @@ void _poem_block_(L,O,T,C,N,CMM)(
           an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
           anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
           comp_obj_block                            = comp_obj_block.init;
-          comp_obj_block.of_part                    = "body";
-          comp_obj_block.of_section                 = "body";
-          comp_obj_block.is_of                      = "block";
-          comp_obj_block.is_a                       = "verse";
-          comp_obj_block.ocn                        = obj_cite_digits.on;
-          comp_obj_block.obj_cite_number            = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-          comp_obj_block.obj_cite_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-          comp_obj_block.obj_cite_number_bkidx      = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
-          comp_obj_block.obj_cite_number_type       = obj_cite_digits.type;
+          comp_obj_block.typeinfo.of_part           = "body";
+          comp_obj_block.typeinfo.of_section        = "body";
+          comp_obj_block.typeinfo.is_of             = "block";
+          comp_obj_block.typeinfo.is_a              = "verse";
+          comp_obj_block.node.ocn                   = obj_cite_digits.on;
+          comp_obj_block.node.obj_cite_number       = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+          comp_obj_block.misc.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+          comp_obj_block.misc.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
+          comp_obj_block.misc.obj_cite_number_type  = obj_cite_digits.type;
           comp_obj_block.text                       = an_object["substantive"];
-          comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-          comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-          comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
+          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;
         }
         object_reset(an_object);
@@ -3453,19 +3453,19 @@ void _poem_block_(L,O,T,C,N,CMM)(
         an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
         anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
         comp_obj_block                            = comp_obj_block.init;
-        comp_obj_block.of_part                    = "body";
-        comp_obj_block.of_section                 = "body";
-        comp_obj_block.is_of                      = "block";
-        comp_obj_block.is_a                       = "verse";
-        comp_obj_block.ocn                        = obj_cite_digits.on;
-        comp_obj_block.obj_cite_number            = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-        comp_obj_block.obj_cite_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-        comp_obj_block.obj_cite_number_bkidx      = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
-        comp_obj_block.obj_cite_number_type       = obj_cite_digits.type;
+        comp_obj_block.typeinfo.of_part           = "body";
+        comp_obj_block.typeinfo.of_section        = "body";
+        comp_obj_block.typeinfo.is_of             = "block";
+        comp_obj_block.typeinfo.is_a              = "verse";
+        comp_obj_block.node.ocn                   = obj_cite_digits.on;
+        comp_obj_block.node.obj_cite_number       = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+        comp_obj_block.misc.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+        comp_obj_block.misc.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
+        comp_obj_block.misc.obj_cite_number_type  = obj_cite_digits.type;
         comp_obj_block.text                       = an_object["substantive"];
-        comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-        comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-        comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
+        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;
         object_reset(an_object);
         processing.remove("verse");
@@ -3496,19 +3496,19 @@ void _poem_block_(L,O,T,C,N,CMM)(
         an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
         anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
         comp_obj_block                            = comp_obj_block.init;
-        comp_obj_block.of_part                    = "body";
-        comp_obj_block.of_section                 = "body";
-        comp_obj_block.is_of                      = "block";
-        comp_obj_block.is_a                       = "verse";
-        comp_obj_block.ocn                        = obj_cite_digits.on;
-        comp_obj_block.obj_cite_number            = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-        comp_obj_block.obj_cite_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-        comp_obj_block.obj_cite_number_bkidx      = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
-        comp_obj_block.obj_cite_number_type       = obj_cite_digits.type;
+        comp_obj_block.typeinfo.of_part           = "body";
+        comp_obj_block.typeinfo.of_section        = "body";
+        comp_obj_block.typeinfo.is_of             = "block";
+        comp_obj_block.typeinfo.is_a              = "verse";
+        comp_obj_block.node.ocn                   = obj_cite_digits.on;
+        comp_obj_block.node.obj_cite_number       = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+        comp_obj_block.misc.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+        comp_obj_block.misc.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
+        comp_obj_block.misc.obj_cite_number_type  = obj_cite_digits.type;
         comp_obj_block.text                       = an_object["substantive"];
-        comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-        comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-        comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
+        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;
         obj_cite_number_poem["end"]               = obj_cite_digits.on.to!string;
         object_reset(an_object);
@@ -3554,19 +3554,19 @@ void _poem_block_(L,O,T,C,N,CMM)(
         an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
         anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
         comp_obj_block                            = comp_obj_block.init;
-        comp_obj_block.of_part                    = "body";
-        comp_obj_block.of_section                 = "body";
-        comp_obj_block.is_of                      = "block";
-        comp_obj_block.is_a                       = "verse";
-        comp_obj_block.ocn                        = obj_cite_digits.on;
-        comp_obj_block.obj_cite_number            = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-        comp_obj_block.obj_cite_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-        comp_obj_block.obj_cite_number_bkidx      = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
-        comp_obj_block.obj_cite_number_type       = obj_cite_digits.type;
+        comp_obj_block.typeinfo.of_part           = "body";
+        comp_obj_block.typeinfo.of_section        = "body";
+        comp_obj_block.typeinfo.is_of             = "block";
+        comp_obj_block.typeinfo.is_a              = "verse";
+        comp_obj_block.node.ocn                   = obj_cite_digits.on;
+        comp_obj_block.node.obj_cite_number       = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+        comp_obj_block.misc.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+        comp_obj_block.misc.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
+        comp_obj_block.misc.obj_cite_number_type  = obj_cite_digits.type;
         comp_obj_block.text                       = an_object["substantive"];
-        comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-        comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-        comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
+        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;
         object_reset(an_object);
         processing.remove("verse");
@@ -3696,15 +3696,15 @@ void _table_closed_make_special_notation_table_(N,CMM)(
     an_object["is"] = "table";
     auto substantive_obj_misc_tuple
       = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, "body_nugget", conf_make_meta);
-    an_object["substantive"]             = substantive_obj_misc_tuple[sObj.content];
-    comp_obj_block.ocn                   = obj_cite_digits.on;
-    comp_obj_block.obj_cite_number       = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-    comp_obj_block.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_block.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
-    comp_obj_block.obj_cite_number_type  = obj_cite_digits.type;
-    comp_obj_block                       = table_instructions(comp_obj_block, an_object["table_head"]);
-    comp_obj_block                       = table_substantive_munge_special(comp_obj_block, an_object["substantive"]);
-    the_document_body_section            ~= comp_obj_block;
+    an_object["substantive"]                  = substantive_obj_misc_tuple[sObj.content];
+    comp_obj_block.node.ocn                   = obj_cite_digits.on;
+    comp_obj_block.node.obj_cite_number       = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+    comp_obj_block.misc.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+    comp_obj_block.misc.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
+    comp_obj_block.misc.obj_cite_number_type  = obj_cite_digits.type;
+    comp_obj_block                            = table_instructions(comp_obj_block, an_object["table_head"]);
+    comp_obj_block                            = table_substantive_munge_special(comp_obj_block, an_object["substantive"]);
+    the_document_body_section                 ~= comp_obj_block;
     object_reset(an_object);
     processing.remove("verse");
     ++cntr;
@@ -3771,19 +3771,19 @@ void _block_flag_line_empty_(B,N,CMM)(
     an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
     anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
     comp_obj_block                            = comp_obj_block.init;
-    comp_obj_block.of_part                    = "body";
-    comp_obj_block.of_section                 = "body";
-    comp_obj_block.is_of                      = "block";
-    comp_obj_block.is_a                       = "quote";
-    comp_obj_block.ocn                        = obj_cite_digits.on;
-    comp_obj_block.obj_cite_number            = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-    comp_obj_block.obj_cite_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_block.obj_cite_number_bkidx      = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
-    comp_obj_block.obj_cite_number_type       = obj_cite_digit_type;
+    comp_obj_block.typeinfo.of_part           = "body";
+    comp_obj_block.typeinfo.of_section        = "body";
+    comp_obj_block.typeinfo.is_of             = "block";
+    comp_obj_block.typeinfo.is_a              = "quote";
+    comp_obj_block.node.ocn                   = obj_cite_digits.on;
+    comp_obj_block.node.obj_cite_number       = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+    comp_obj_block.misc.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+    comp_obj_block.misc.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
+    comp_obj_block.misc.obj_cite_number_type  = obj_cite_digit_type;
     comp_obj_block.text                       = an_object["substantive"];
-    comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-    comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-    comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
+    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;
     obj_type_status["blocks"]                 = TriState.off;
     obj_type_status["quote"]                  = TriState.off;
@@ -3821,19 +3821,19 @@ void _block_flag_line_empty_(B,N,CMM)(
     an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
     anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
     comp_obj_block                            = comp_obj_block.init;
-    comp_obj_block.of_part                    = "body";
-    comp_obj_block.of_section                 = "body";
-    comp_obj_block.is_of                      = "block";
-    comp_obj_block.is_a                       = "group";
-    comp_obj_block.ocn                        = obj_cite_digits.on;
-    comp_obj_block.obj_cite_number            = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-    comp_obj_block.obj_cite_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_block.obj_cite_number_bkidx      = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
-    comp_obj_block.obj_cite_number_type       = obj_cite_digits.type;
+    comp_obj_block.typeinfo.of_part           = "body";
+    comp_obj_block.typeinfo.of_section        = "body";
+    comp_obj_block.typeinfo.is_of             = "block";
+    comp_obj_block.typeinfo.is_a              = "group";
+    comp_obj_block.node.ocn                   = obj_cite_digits.on;
+    comp_obj_block.node.obj_cite_number       = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+    comp_obj_block.misc.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+    comp_obj_block.misc.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
+    comp_obj_block.misc.obj_cite_number_type  = obj_cite_digits.type;
     comp_obj_block.text                       = an_object["substantive"];
-    comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-    comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-    comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
+    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;
     obj_type_status["blocks"]                 = TriState.off;
     obj_type_status["group"]                  = TriState.off;
@@ -3870,19 +3870,19 @@ void _block_flag_line_empty_(B,N,CMM)(
       = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta);
     an_object["substantive"]                  = substantive_obj_misc_tuple[sObj.content];
     comp_obj_block                            = comp_obj_block.init;
-    comp_obj_block.of_part                    = "body";
-    comp_obj_block.of_section                 = "body";
-    comp_obj_block.is_of                      = "block";
-    comp_obj_block.is_a                       = "block";
-    comp_obj_block.ocn                        = obj_cite_digits.on;
-    comp_obj_block.obj_cite_number            = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-    comp_obj_block.obj_cite_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_block.obj_cite_number_bkidx      = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
-    comp_obj_block.obj_cite_number_type       = obj_cite_digit_type;
+    comp_obj_block.typeinfo.of_part           = "body";
+    comp_obj_block.typeinfo.of_section        = "body";
+    comp_obj_block.typeinfo.is_of             = "block";
+    comp_obj_block.typeinfo.is_a              = "block";
+    comp_obj_block.node.ocn                   = obj_cite_digits.on;
+    comp_obj_block.node.obj_cite_number       = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+    comp_obj_block.misc.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+    comp_obj_block.misc.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
+    comp_obj_block.misc.obj_cite_number_type  = obj_cite_digit_type;
     comp_obj_block.text                       = an_object["substantive"];
-    comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-    comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-    comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
+    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;
     obj_type_status["blocks"]                 = TriState.off;
     obj_type_status["block"]                  = TriState.off;
@@ -3914,20 +3914,20 @@ void _block_flag_line_empty_(B,N,CMM)(
         heading_ptr-1,
         an_object["is"]
       );
-    comp_obj_poem_ocn                         = comp_obj_poem_ocn.init;
-    comp_obj_poem_ocn.of_part                 = "body";
-    comp_obj_poem_ocn.of_section              = "body";
-    comp_obj_poem_ocn.is_of                   = "block";
-    comp_obj_poem_ocn.is_a                    = "poem";
-    comp_obj_poem_ocn.ocn                     = obj_cite_digits.on;
-    comp_obj_poem_ocn.obj_cite_number         = (obj_cite_number_poem["start"] ~ "..." ~ obj_cite_number_poem["end"]);
-    comp_obj_poem_ocn.obj_cite_number_off     = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string; //
-    comp_obj_poem_ocn.obj_cite_number_bkidx   = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string; //
-    comp_obj_poem_ocn.obj_cite_number_type    = obj_cite_digits.type;
-    comp_obj_poem_ocn.text                    = "";
-    the_document_body_section                 ~= comp_obj_poem_ocn;
-    obj_type_status["blocks"]                 = TriState.off;
-    obj_type_status["poem"]                   = TriState.off;
+    comp_obj_poem_ocn                            = comp_obj_poem_ocn.init;
+    comp_obj_poem_ocn.typeinfo.of_part           = "body";
+    comp_obj_poem_ocn.typeinfo.of_section        = "body";
+    comp_obj_poem_ocn.typeinfo.is_of             = "block";
+    comp_obj_poem_ocn.typeinfo.is_a              = "poem";
+    comp_obj_poem_ocn.node.ocn                   = obj_cite_digits.on;
+    comp_obj_poem_ocn.node.obj_cite_number       = (obj_cite_number_poem["start"] ~ "..." ~ obj_cite_number_poem["end"]);
+    comp_obj_poem_ocn.misc.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string; //
+    comp_obj_poem_ocn.misc.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string; //
+    comp_obj_poem_ocn.misc.obj_cite_number_type  = obj_cite_digits.type;
+    comp_obj_poem_ocn.text                        = "";
+    the_document_body_section                     ~= comp_obj_poem_ocn;
+    obj_type_status["blocks"]                     = TriState.off;
+    obj_type_status["poem"]                       = TriState.off;
     object_reset(an_object);
     processing.remove("verse");
 #+END_SRC
@@ -3961,19 +3961,19 @@ void _block_flag_line_empty_(B,N,CMM)(
     an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
     anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
     comp_obj_code                             = comp_obj_code.init;
-    comp_obj_code.of_part                     = "body";
-    comp_obj_code.of_section                  = "body";
-    comp_obj_code.is_of                       = "block";
-    comp_obj_code.is_a                        = "code";
-    comp_obj_code.ocn                         = obj_cite_digits.on;
-    comp_obj_code.obj_cite_number             = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-    comp_obj_block.obj_cite_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_block.obj_cite_number_bkidx      = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
-    comp_obj_block.obj_cite_number_type       = obj_cite_digits.type;
+    comp_obj_code.typeinfo.of_part            = "body";
+    comp_obj_code.typeinfo.of_section         = "body";
+    comp_obj_code.typeinfo.is_of              = "block";
+    comp_obj_code.typeinfo.is_a               = "code";
+    comp_obj_code.node.ocn                    = obj_cite_digits.on;
+    comp_obj_code.node.obj_cite_number        = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+    comp_obj_block.misc.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+    comp_obj_block.misc.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
+    comp_obj_block.misc.obj_cite_number_type  = obj_cite_digits.type;
     comp_obj_code.text                        = an_object["substantive"];
-    comp_obj_code.inline_notes_reg            = substantive_obj_misc_tuple[sObj.notes_reg];
-    comp_obj_code.inline_notes_star           = substantive_obj_misc_tuple[sObj.notes_star];
-    comp_obj_code.inline_links                = substantive_obj_misc_tuple[sObj.links];
+    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;
     obj_type_status["blocks"]                 = TriState.off;
     obj_type_status["code"]                   = TriState.off;
@@ -4011,11 +4011,11 @@ void _block_flag_line_empty_(B,N,CMM)(
       = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta);
     an_object["substantive"]                  = substantive_obj_misc_tuple[sObj.content];
     comp_obj_block                            = comp_obj_block.init;
-    comp_obj_block.ocn                        = obj_cite_digits.on;
-    comp_obj_block.obj_cite_number            = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-    comp_obj_block.obj_cite_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_block.obj_cite_number_bkidx      = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
-    comp_obj_block.obj_cite_number_type       = obj_cite_digits.type;
+    comp_obj_block.node.ocn                   = obj_cite_digits.on;
+    comp_obj_block.node.obj_cite_number       = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+    comp_obj_block.misc.obj_cite_number_off   = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+    comp_obj_block.misc.obj_cite_number_bkidx = (obj_cite_digits.bkidx==0) ? "" : obj_cite_digits.bkidx.to!string;
+    comp_obj_block.misc.obj_cite_number_type  = obj_cite_digits.type;
     comp_obj_block = table_instructions(comp_obj_block, an_object["table_head"]);
     comp_obj_block = table_substantive_munge(comp_obj_block, an_object["substantive"]);
     the_document_body_section                 ~= comp_obj_block;
@@ -4526,20 +4526,20 @@ auto table_instructions(O,H)(
   return ref H  table_head,
 ) {
   static auto rgx = Rgx();
-  table_object.of_part           = "body";
-  table_object.of_section        = "body";
-  table_object.is_of             = "block";
-  table_object.is_a              = "table";
-  table_object.inline_notes_reg  = false;
-  table_object.inline_notes_star = false;
-  table_object.inline_links      = false;
+  table_object.typeinfo.of_part         = "body";
+  table_object.typeinfo.of_section      = "body";
+  table_object.typeinfo.is_of           = "block";
+  table_object.typeinfo.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; // double check, may be obsolete
+    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; // double check, may be obsolete
     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"];
+      table_object.table.column_widths ~= x["width"].to!int;
+      table_object.table.column_aligns ~= (x["align"].empty) ? "" : x["align"];
     }
   }
   return table_object;
@@ -4587,26 +4587,26 @@ auto table_array_munge(O,T)(
       }
       col_num_ = idx_c;
       _table_substantive ~= col ~ mng.tc_s;
-      if (idx_r == 0 && comp_obj_block.table_heading) {
+      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";
+        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";
+          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";
+        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";
+          comp_obj_block.table.column_aligns ~= "l";
         }
       }
     }
@@ -4620,55 +4620,55 @@ auto table_array_munge(O,T)(
     }
     _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;
+  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);
+        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) {
+  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;
+  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) {
+  } 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;
+    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;
+      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) {
+    } 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);
+  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",
+    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;
@@ -5441,19 +5441,19 @@ static struct ObjInlineMarkup {
       );
       toc_txt_= munge.url_links(toc_txt_);
       comp_obj_toc                            = comp_obj_toc.init;
-      comp_obj_toc.of_part                    = "frontmatter";
-      comp_obj_toc.of_section                 = "toc";
-      comp_obj_toc.is_of                      = "para";
-      comp_obj_toc.is_a                       = "toc";
-      comp_obj_toc.ocn                        = 0;
-      comp_obj_toc.obj_cite_number            = "";
-      comp_obj_toc.obj_cite_number_off        = "";
-      comp_obj_toc.obj_cite_number_type       = 0;
-      comp_obj_toc.indent_hang                = indent["hang_position"];
-      comp_obj_toc.indent_base                = indent["base_position"];
-      comp_obj_toc.bullet                     = false;
+      comp_obj_toc.typeinfo.of_part           = "frontmatter";
+      comp_obj_toc.typeinfo.of_section        = "toc";
+      comp_obj_toc.typeinfo.is_of             = "para";
+      comp_obj_toc.typeinfo.is_a              = "toc";
+      comp_obj_toc.node.ocn                   = 0;
+      comp_obj_toc.node.obj_cite_number       = "";
+      comp_obj_toc.misc.obj_cite_number_off   = "";
+      comp_obj_toc.misc.obj_cite_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;
       comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
+      comp_obj_toc.has.inline_links           = true;
       the_table_of_contents_section["scroll"] ~= comp_obj_toc;
     } else {
       indent=[
@@ -5461,32 +5461,32 @@ static struct ObjInlineMarkup {
         "base_position" : 0,
       ];
       comp_obj_toc                            = comp_obj_toc.init;
-      comp_obj_toc.of_part                    = "frontmatter";
-      comp_obj_toc.of_section                 = "toc";
-      comp_obj_toc.is_of                      = "para";
-      comp_obj_toc.is_a                       = "toc";
-      comp_obj_toc.ocn                        = 0;
-      comp_obj_toc.obj_cite_number            = "";
-      comp_obj_toc.obj_cite_number_off        = "";
-      comp_obj_toc.obj_cite_number_type       = 0;
-      comp_obj_toc.indent_hang                = indent["hang_position"];
-      comp_obj_toc.indent_base                = indent["base_position"];
-      comp_obj_toc.bullet                     = false;
+      comp_obj_toc.typeinfo.of_part           = "frontmatter";
+      comp_obj_toc.typeinfo.of_section        = "toc";
+      comp_obj_toc.typeinfo.is_of             = "para";
+      comp_obj_toc.typeinfo.is_a              = "toc";
+      comp_obj_toc.node.ocn                   = 0;
+      comp_obj_toc.node.obj_cite_number       = "";
+      comp_obj_toc.misc.obj_cite_number_off   = "";
+      comp_obj_toc.misc.obj_cite_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;
       comp_obj_toc.text                       = "Table of Contents";
-      comp_obj_toc.inline_links               = true;
+      comp_obj_toc.has.inline_links           = true;
       the_table_of_contents_section["scroll"] ~= comp_obj_toc;
     }
     comp_obj_toc                              = comp_obj_toc.init;
-    comp_obj_toc.of_part                      = "frontmatter";
-    comp_obj_toc.of_section                   = "toc";
-    comp_obj_toc.is_of                        = "para";
-    comp_obj_toc.is_a                         = "toc";
-    comp_obj_toc.ocn                          = 0;
-    comp_obj_toc.obj_cite_number              = "";
-    comp_obj_toc.obj_cite_number_off          = "";
-    comp_obj_toc.obj_cite_number_type         = 0;
-    comp_obj_toc.bullet                       = false;
-    comp_obj_toc.inline_links                 = true;
+    comp_obj_toc.typeinfo.of_part             = "frontmatter";
+    comp_obj_toc.typeinfo.of_section          = "toc";
+    comp_obj_toc.typeinfo.is_of               = "para";
+    comp_obj_toc.typeinfo.is_a                = "toc";
+    comp_obj_toc.node.ocn                     = 0;
+    comp_obj_toc.node.obj_cite_number         = "";
+    comp_obj_toc.misc.obj_cite_number_off     = "";
+    comp_obj_toc.misc.obj_cite_number_type    = 0;
+    comp_obj_toc.attrib.bullet                = false;
+    comp_obj_toc.has.inline_links             = true;
     switch (obj_["lev_markup_number"].to!int) {
     case 0:
       indent=[
@@ -5495,10 +5495,10 @@ static struct ObjInlineMarkup {
       ];
       toc_txt_ = "{ Table of Contents }" ~ mkup.mark_internal_site_lnk ~ "toc.fnSuffix";
       toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.indent_hang                = indent["hang_position"];
-      comp_obj_toc.indent_base                = indent["base_position"];
+      comp_obj_toc.attrib.indent_hang         = indent["hang_position"];
+      comp_obj_toc.attrib.indent_base         = indent["base_position"];
       comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
+      comp_obj_toc.has.inline_links           = true;
       the_table_of_contents_section["seg"]    ~= comp_obj_toc;
       break;
     case 1: .. case 3:
@@ -5511,10 +5511,10 @@ static struct ObjInlineMarkup {
         heading_toc_,
       );
       toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.indent_hang                = indent["hang_position"];
-      comp_obj_toc.indent_base                = indent["base_position"];
+      comp_obj_toc.attrib.indent_hang         = indent["hang_position"];
+      comp_obj_toc.attrib.indent_base         = indent["base_position"];
       comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
+      comp_obj_toc.has.inline_links           = true;
       the_table_of_contents_section["seg"]    ~= comp_obj_toc;
       break;
     case 4:
@@ -5531,10 +5531,10 @@ static struct ObjInlineMarkup {
         "hang_position" : obj_["lev_markup_number"].to!int,
         "base_position" : obj_["lev_markup_number"].to!int,
       ];
-      comp_obj_toc.indent_hang                = indent["hang_position"];
-      comp_obj_toc.indent_base                = indent["base_position"];
+      comp_obj_toc.attrib.indent_hang         = indent["hang_position"];
+      comp_obj_toc.attrib.indent_base         = indent["base_position"];
       comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
+      comp_obj_toc.has.inline_links           = true;
       the_table_of_contents_section["seg"]    ~= comp_obj_toc;
       break;
     case 5: .. case 7:
@@ -5560,10 +5560,10 @@ static struct ObjInlineMarkup {
         "hang_position" : obj_["lev_markup_number"].to!int,
         "base_position" : obj_["lev_markup_number"].to!int,
       ];
-      comp_obj_toc.indent_hang                = indent["hang_position"];
-      comp_obj_toc.indent_base                = indent["base_position"];
+      comp_obj_toc.attrib.indent_hang         = indent["hang_position"];
+      comp_obj_toc.attrib.indent_base         = indent["base_position"];
       comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
+      comp_obj_toc.has.inline_links           = true;
       the_table_of_contents_section["seg"]    ~= comp_obj_toc;
       break;
     default:
@@ -6108,16 +6108,16 @@ struct ObjAttributes {
       (oa_j.type == JSON_TYPE.OBJECT)
     );
     if (obj_is_ == "heading") {
-      oa_j.object["obj_cite_number"] = _comp_obj_heading.ocn;
-      oa_j.object["lev_markup_number"] = _comp_obj_heading.heading_lev_markup;
-      oa_j.object["lev_collapsed_number"] = _comp_obj_heading.heading_lev_collapsed;
+      oa_j.object["obj_cite_number"] = _comp_obj_heading.node.ocn;
+      oa_j.object["lev_markup_number"] = _comp_obj_heading.node.heading_lev_markup;
+      oa_j.object["lev_collapsed_number"] = _comp_obj_heading.node.heading_lev_collapsed;
       oa_j.object["heading_ptr"]
-        = _comp_obj_heading.ptr_heading;
+        = _comp_obj_heading.ptr.heading;
       oa_j.object["doc_object_ptr"]
-        = _comp_obj_heading.ptr_doc_object;
+        = _comp_obj_heading.ptr.doc_object;
     }
-    oa_j.object["parent_obj_cite_number"] = _comp_obj_heading.parent_ocn;
-    oa_j.object["parent_lev_markup_number"] = _comp_obj_heading.parent_lev_markup;
+    oa_j.object["parent_obj_cite_number"] = _comp_obj_heading.node.parent_ocn;
+    oa_j.object["parent_lev_markup_number"] = _comp_obj_heading.node.parent_lev_markup;
     _obj_attrib = oa_j.toString();
     return _obj_attrib;
   }
@@ -6330,46 +6330,46 @@ struct BookIndexReportSection {
     && opt_action.section_bookindex)) {
       string bi_tmp_seg, bi_tmp_scroll;
       string[] bi_tmp_tags;
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.of_part               = "backmatter";
-      comp_obj_heading_.of_section            = "bookindex";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "Book Index";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_heading_.segment_anchor_tag    = "_part_book_index";
-      comp_obj_heading_.marked_up_level       = "B";
-      comp_obj_heading_.heading_lev_markup    = 1;
-      comp_obj_heading_.heading_lev_collapsed = 1;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      comp_obj_heading.inline_links           = true;
-      bookindex_section["scroll"]             ~= comp_obj_heading_;
-      bookindex_section["seg"]                ~= comp_obj_heading_;
+      comp_obj_heading_                            = comp_obj_heading_.init;
+      comp_obj_heading_.typeinfo.of_part           = "backmatter";
+      comp_obj_heading_.typeinfo.of_section        = "bookindex";
+      comp_obj_heading_.typeinfo.is_of             = "para";
+      comp_obj_heading_.typeinfo.is_a              = "heading";
+      comp_obj_heading_.text                       = "Book Index";
+      comp_obj_heading_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_number_type  = 0;
+      comp_obj_heading_.tags.segment_anchor_tag    = "_part_book_index";
+      comp_obj_heading_.node.marked_up_level       = "B";
+      comp_obj_heading_.node.heading_lev_markup    = 1;
+      comp_obj_heading_.node.heading_lev_collapsed = 1;
+      comp_obj_heading_.node.parent_ocn            = 1;
+      comp_obj_heading_.node.parent_lev_markup     = 0;
+      comp_obj_heading.has.inline_links            = true;
+      bookindex_section["scroll"]                  ~= comp_obj_heading_;
+      bookindex_section["seg"]                     ~= comp_obj_heading_;
       ++mkn;
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.of_part               = "backmatter";
-      comp_obj_heading_.of_section            = "bookindex";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "Index";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_heading_.segment_anchor_tag    = "bookindex";
-      comp_obj_heading_.marked_up_level       = "1";
-      comp_obj_heading_.heading_lev_markup    = 4;
-      comp_obj_heading_.heading_lev_collapsed = 2;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      comp_obj_heading.inline_links           = false;
-      comp_obj_heading_.anchor_tags           = ["bookindex"];
-      bookindex_section["scroll"]             ~= comp_obj_heading_;
-      bookindex_section["seg"]                ~= comp_obj_heading_;
+      comp_obj_heading_                            = comp_obj_heading_.init;
+      comp_obj_heading_.typeinfo.of_part           = "backmatter";
+      comp_obj_heading_.typeinfo.of_section        = "bookindex";
+      comp_obj_heading_.typeinfo.is_of             = "para";
+      comp_obj_heading_.typeinfo.is_a              = "heading";
+      comp_obj_heading_.text                       = "Index";
+      comp_obj_heading_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_number_type  = 0;
+      comp_obj_heading_.tags.segment_anchor_tag    = "bookindex";
+      comp_obj_heading_.node.marked_up_level       = "1";
+      comp_obj_heading_.node.heading_lev_markup    = 4;
+      comp_obj_heading_.node.heading_lev_collapsed = 2;
+      comp_obj_heading_.node.parent_ocn            = 1;
+      comp_obj_heading_.node.parent_lev_markup     = 0;
+      comp_obj_heading.has.inline_links            = false;
+      comp_obj_heading_.tags.anchor_tags           = ["bookindex"];
+      bookindex_section["scroll"]                  ~= comp_obj_heading_;
+      bookindex_section["seg"]                     ~= comp_obj_heading_;
       ++mkn;
       import std.array : appender;
       auto buffer = appender!(char[])();
@@ -6426,42 +6426,42 @@ struct BookIndexReportSection {
           bi_tmp_seg ~= " \\\\\n    ";
           ++skn;
         }
-        bi_tmp_scroll                       = (bi_tmp_scroll).replaceFirst(rgx.trailing_linebreak, "");
-        bi_tmp_seg                          = (bi_tmp_seg).replaceFirst(rgx.trailing_linebreak, "");
-        comp_obj_para                       = comp_obj_para.init;
-        comp_obj_para.of_part               = "backmatter";
-        comp_obj_para.of_section            = "bookindex";
-        comp_obj_para.is_of                 = "para";
-        comp_obj_para.is_a                  = "bookindex";
-        comp_obj_para.text                  = bi_tmp_scroll.to!string.strip;
-        comp_obj_para.ocn                   = 0;
-        comp_obj_para.obj_cite_number       = "";
-        comp_obj_para.obj_cite_number_off   = "";
-        comp_obj_para.obj_cite_number_type  = 0;
-        comp_obj_para.anchor_tags           = bi_tmp_tags;
-        comp_obj_para.indent_hang           = 0;
-        comp_obj_para.indent_base           = 1;
-        comp_obj_para.bullet                = false;
-        comp_obj_para.inline_links          = true;
-        bookindex_section["scroll"]         ~= comp_obj_para;
-        comp_obj_para.text                  = bi_tmp_seg.to!string.strip;
-        bookindex_section["seg"]            ~= comp_obj_para;
+        bi_tmp_scroll                           = (bi_tmp_scroll).replaceFirst(rgx.trailing_linebreak, "");
+        bi_tmp_seg                              = (bi_tmp_seg).replaceFirst(rgx.trailing_linebreak, "");
+        comp_obj_para                           = comp_obj_para.init;
+        comp_obj_para.typeinfo.of_part          = "backmatter";
+        comp_obj_para.typeinfo.of_section       = "bookindex";
+        comp_obj_para.typeinfo.is_of            = "para";
+        comp_obj_para.typeinfo.is_a             = "bookindex";
+        comp_obj_para.text                      = bi_tmp_scroll.to!string.strip;
+        comp_obj_para.node.ocn                  = 0;
+        comp_obj_para.node.obj_cite_number      = "";
+        comp_obj_para.misc.obj_cite_number_off  = "";
+        comp_obj_para.misc.obj_cite_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;
+        bookindex_section["scroll"]             ~= comp_obj_para;
+        comp_obj_para.text                      = bi_tmp_seg.to!string.strip;
+        bookindex_section["seg"]                ~= 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_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_heading_.marked_up_level       = "B";
-      comp_obj_heading_.heading_lev_markup    = 1;
-      comp_obj_heading_.heading_lev_collapsed = 1;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      bookindex_section["scroll"]             ~= comp_obj_heading_;
-      bookindex_section["seg"]                ~= comp_obj_heading_;
+      comp_obj_heading_                            = comp_obj_heading_.init;
+      comp_obj_heading_.text                       = "(skip) there is no Book Index";
+      comp_obj_heading_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_number_type  = 0;
+      comp_obj_heading_.node.marked_up_level       = "B";
+      comp_obj_heading_.node.heading_lev_markup    = 1;
+      comp_obj_heading_.node.heading_lev_collapsed = 1;
+      comp_obj_heading_.node.parent_ocn            = 1;
+      comp_obj_heading_.node.parent_lev_markup     = 0;
+      bookindex_section["scroll"]                  ~= comp_obj_heading_;
+      bookindex_section["seg"]                     ~= comp_obj_heading_;
     }
     auto t = tuple(bookindex_section, obj_cite_digits);
     return t;
@@ -6496,12 +6496,12 @@ struct NotesSection {
     int                   cntr,
   )
   in {
-    assert((contents_am[cntr].is_a == "para")
-    || (contents_am[cntr].is_a == "heading")
-    || (contents_am[cntr].is_a == "quote")
-    || (contents_am[cntr].is_a == "group")
-    || (contents_am[cntr].is_a == "block")
-    || (contents_am[cntr].is_a == "verse"));
+    assert((contents_am[cntr].typeinfo.is_a == "para")
+    || (contents_am[cntr].typeinfo.is_a == "heading")
+    || (contents_am[cntr].typeinfo.is_a == "quote")
+    || (contents_am[cntr].typeinfo.is_a == "group")
+    || (contents_am[cntr].typeinfo.is_a == "block")
+    || (contents_am[cntr].typeinfo.is_a == "verse"));
     assert(cntr >= previous_count);
     previous_count=cntr;
     assert(
@@ -6589,81 +6589,81 @@ struct NotesSection {
     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_.of_part               = "backmatter";
-      comp_obj_heading_.of_section            = "endnotes";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "Endnotes";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_heading_.segment_anchor_tag    = "_part_endnotes";
-      comp_obj_heading_.marked_up_level       = "B";
-      comp_obj_heading_.heading_lev_markup    = 1;
-      comp_obj_heading_.heading_lev_collapsed = 1;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      the_endnotes_section                    ~= comp_obj_heading_;
+      comp_obj_heading_                            = comp_obj_heading_.init;
+      comp_obj_heading_.typeinfo.of_part           = "backmatter";
+      comp_obj_heading_.typeinfo.of_section        = "endnotes";
+      comp_obj_heading_.typeinfo.is_of             = "para";
+      comp_obj_heading_.typeinfo.is_a              = "heading";
+      comp_obj_heading_.text                       = "Endnotes";
+      comp_obj_heading_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_number_type  = 0;
+      comp_obj_heading_.tags.segment_anchor_tag    = "_part_endnotes";
+      comp_obj_heading_.node.marked_up_level       = "B";
+      comp_obj_heading_.node.heading_lev_markup    = 1;
+      comp_obj_heading_.node.heading_lev_collapsed = 1;
+      comp_obj_heading_.node.parent_ocn            = 1;
+      comp_obj_heading_.node.parent_lev_markup     = 0;
+      the_endnotes_section                         ~= comp_obj_heading_;
       ++mkn;
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.of_part               = "backmatter";
-      comp_obj_heading_.of_section            = "endnotes";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "Endnotes";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_heading_.segment_anchor_tag    = "endnotes";
-      comp_obj_heading_.marked_up_level       = "1";
-      comp_obj_heading_.heading_lev_markup    = 4;
-      comp_obj_heading_.heading_lev_collapsed = 2;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      comp_obj_heading_.anchor_tags           = ["endnotes"];
-      the_endnotes_section                    ~= comp_obj_heading_;
+      comp_obj_heading_                            = comp_obj_heading_.init;
+      comp_obj_heading_.typeinfo.of_part           = "backmatter";
+      comp_obj_heading_.typeinfo.of_section        = "endnotes";
+      comp_obj_heading_.typeinfo.is_of             = "para";
+      comp_obj_heading_.typeinfo.is_a              = "heading";
+      comp_obj_heading_.text                       = "Endnotes";
+      comp_obj_heading_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_number_type  = 0;
+      comp_obj_heading_.tags.segment_anchor_tag    = "endnotes";
+      comp_obj_heading_.node.marked_up_level       = "1";
+      comp_obj_heading_.node.heading_lev_markup    = 4;
+      comp_obj_heading_.node.heading_lev_collapsed = 2;
+      comp_obj_heading_.node.parent_ocn            = 1;
+      comp_obj_heading_.node.parent_lev_markup     = 0;
+      comp_obj_heading_.tags.anchor_tags           = ["endnotes"];
+      the_endnotes_section                         ~= comp_obj_heading_;
       ++mkn;
     } else {
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.of_part               = "empty";
-      comp_obj_heading_.of_section            = "empty";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "(skip) there are no Endnotes";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_heading_.marked_up_level       = "B";
-      comp_obj_heading_.heading_lev_markup    = 1;
-      comp_obj_heading_.heading_lev_collapsed = 1;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      the_endnotes_section                    ~= comp_obj_heading_;
+      comp_obj_heading_                            = comp_obj_heading_.init;
+      comp_obj_heading_.typeinfo.of_part           = "empty";
+      comp_obj_heading_.typeinfo.of_section        = "empty";
+      comp_obj_heading_.typeinfo.is_of             = "para";
+      comp_obj_heading_.typeinfo.is_a              = "heading";
+      comp_obj_heading_.text                       = "(skip) there are no Endnotes";
+      comp_obj_heading_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_number_type  = 0;
+      comp_obj_heading_.node.marked_up_level       = "B";
+      comp_obj_heading_.node.heading_lev_markup    = 1;
+      comp_obj_heading_.node.heading_lev_collapsed = 1;
+      comp_obj_heading_.node.parent_ocn            = 1;
+      comp_obj_heading_.node.parent_lev_markup     = 0;
+      the_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_.of_part               = "backmatter";
-      comp_obj_endnote_.of_section            = "endnote";
-      comp_obj_endnote_.is_of                 = "para";
-      comp_obj_endnote_.is_a                  = "endnote";
-      comp_obj_endnote_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.obj_cite_number_off   = "";
-      comp_obj_heading_.obj_cite_number_type  = 0;
-      comp_obj_endnote_.indent_hang           = 0;
-      comp_obj_endnote_.indent_base           = 0;
-      comp_obj_endnote_.bullet                = false;
+      comp_obj_endnote_                            = comp_obj_endnote_.init;
+      comp_obj_endnote_.typeinfo.of_part           = "backmatter";
+      comp_obj_endnote_.typeinfo.of_section        = "endnote";
+      comp_obj_endnote_.typeinfo.is_of             = "para";
+      comp_obj_endnote_.typeinfo.is_a              = "endnote";
+      comp_obj_endnote_.node.ocn                   = 0;
+      comp_obj_heading_.node.obj_cite_number       = "";
+      comp_obj_heading_.misc.obj_cite_number_off   = "";
+      comp_obj_heading_.misc.obj_cite_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.captures[1].to!string;
         string   anchor_tag                   = "note_" ~ notenumber;
-        comp_obj_endnote_.anchor_tags         = [ endnotes_["anchor"][i] ];
-        comp_obj_endnote_.inline_links        = true;
+        comp_obj_endnote_.tags.anchor_tags    = [ endnotes_["anchor"][i] ];
+        comp_obj_endnote_.has.inline_links    = true;
         comp_obj_endnote_.text                = endnote.strip;
         the_endnotes_section                  ~= comp_obj_endnote_;
       }
@@ -6869,12 +6869,12 @@ struct NodeStructureMetadata {
       p_["obj_cite_number"] = lv4;
     }
     ObjGenericComposite comp_obj_location;
-    comp_obj_location                       = comp_obj_location.init;
-    comp_obj_location.is_a                  = is_;
-    comp_obj_location.ocn                   = obj_cite_digits.on;
-    comp_obj_location.segment_anchor_tag    = segment_anchor_tag.to!string;
-    comp_obj_location.parent_ocn            = p_["obj_cite_number"];
-    comp_obj_location.parent_lev_markup     = p_["lev_markup_number"];
+    comp_obj_location                         = comp_obj_location.init;
+    comp_obj_location.typeinfo.is_a           = is_;
+    comp_obj_location.node.ocn                = obj_cite_digits.on;
+    comp_obj_location.tags.segment_anchor_tag = segment_anchor_tag.to!string;
+    comp_obj_location.node.parent_ocn         = p_["obj_cite_number"];
+    comp_obj_location.node.parent_lev_markup  = p_["lev_markup_number"];
     debug(node) {
       if (lev_markup_number.match(rgx.levels_numbered_headings)) {
         writeln("x ", _node.to!string);
@@ -6882,9 +6882,9 @@ struct NodeStructureMetadata {
         writeln("- ", _node.to!string);
       }
     }
-    assert(comp_obj_location.parent_lev_markup >= 4);
-    assert(comp_obj_location.parent_lev_markup <= 7);
-    assert(comp_obj_location.parent_ocn >= 0);
+    assert(comp_obj_location.node.parent_lev_markup >= 4);
+    assert(comp_obj_location.node.parent_lev_markup <= 7);
+    assert(comp_obj_location.node.parent_ocn >= 0);
     return comp_obj_location;
   }
   invariant() {
@@ -7026,29 +7026,29 @@ struct NodeStructureMetadata {
       break;
     }
     ObjGenericComposite _comp_obj_heading_;
-    _comp_obj_heading_                           = _comp_obj_heading_.init;
-    _comp_obj_heading_.of_part                   = "body";
-    _comp_obj_heading_.of_section                = "body";
-    _comp_obj_heading_.is_of                     = "para";
-    _comp_obj_heading_.is_a                      = "heading";
-    _comp_obj_heading_.text                      = _text.to!string.strip;
-    _comp_obj_heading_.ocn                       = obj_cite_digits.on;
-    _comp_obj_heading_.obj_cite_number           = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
-    _comp_obj_heading_.obj_cite_number_off       = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    _comp_obj_heading_.obj_cite_number_type      = obj_cite_digits.type;
-    _comp_obj_heading_.segment_anchor_tag        = segment_anchor_tag.to!string;
-    _comp_obj_heading_.marked_up_level           = lev;
-    _comp_obj_heading_.heading_lev_markup        = (!(lev_markup_number.empty) ? lev_markup_number.to!int : 0);
-    _comp_obj_heading_.heading_lev_collapsed     = (!(lev_collapsed_number.empty) ? lev_collapsed_number.to!int : 0);
-    _comp_obj_heading_.parent_ocn                = p_["obj_cite_number"];
-    _comp_obj_heading_.parent_lev_markup         = p_["lev_markup_number"];
-    _comp_obj_heading_.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_.inline_notes_reg          = flag_notes_reg;
-    _comp_obj_heading_.inline_notes_star         = flag_notes_star;
-    _comp_obj_heading_.inline_links              = flag_links;
+    _comp_obj_heading_                               = _comp_obj_heading_.init;
+    _comp_obj_heading_.typeinfo.of_part              = "body";
+    _comp_obj_heading_.typeinfo.of_section           = "body";
+    _comp_obj_heading_.typeinfo.is_of                = "para";
+    _comp_obj_heading_.typeinfo.is_a                 = "heading";
+    _comp_obj_heading_.text                          = _text.to!string.strip;
+    _comp_obj_heading_.node.ocn                      = obj_cite_digits.on;
+    _comp_obj_heading_.node.obj_cite_number          = (obj_cite_digits.on==0)    ? "" : obj_cite_digits.on.to!string;
+    _comp_obj_heading_.misc.obj_cite_number_off      = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+    _comp_obj_heading_.misc.obj_cite_number_type     = obj_cite_digits.type;
+    _comp_obj_heading_.tags.segment_anchor_tag       = segment_anchor_tag.to!string;
+    _comp_obj_heading_.node.marked_up_level          = lev;
+    _comp_obj_heading_.node.heading_lev_markup       = (!(lev_markup_number.empty) ? lev_markup_number.to!int : 0);
+    _comp_obj_heading_.node.heading_lev_collapsed    = (!(lev_collapsed_number.empty) ? lev_collapsed_number.to!int : 0);
+    _comp_obj_heading_.node.parent_ocn               = p_["obj_cite_number"];
+    _comp_obj_heading_.node.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;
     debug(node) {
       if (lev_markup_number.match(rgx.levels_numbered_headings)) {
         writeln("* ", _node.to!string);
@@ -7059,34 +7059,34 @@ struct NodeStructureMetadata {
         writeln("* ", _node.to!string);
       }
     }
-    assert(_comp_obj_heading_.parent_lev_markup <= 7);
-    assert(_comp_obj_heading_.parent_ocn >= 0);
+    assert(_comp_obj_heading_.node.parent_lev_markup <= 7);
+    assert(_comp_obj_heading_.node.parent_ocn >= 0);
     if (lev_markup_number.match(rgx.levels_numbered_headings)) {
-      assert(_comp_obj_heading_.heading_lev_markup <= 7);
-      assert(_comp_obj_heading_.ocn >= 0);
-      if (_comp_obj_heading_.parent_lev_markup > 0) {
-        assert(_comp_obj_heading_.parent_lev_markup < _comp_obj_heading_.heading_lev_markup);
-        if (_comp_obj_heading_.ocn != 0) {
-          assert(_comp_obj_heading_.parent_ocn < _comp_obj_heading_.ocn);
+      assert(_comp_obj_heading_.node.heading_lev_markup <= 7);
+      assert(_comp_obj_heading_.node.ocn >= 0);
+      if (_comp_obj_heading_.node.parent_lev_markup > 0) {
+        assert(_comp_obj_heading_.node.parent_lev_markup < _comp_obj_heading_.node.heading_lev_markup);
+        if (_comp_obj_heading_.node.ocn != 0) {
+          assert(_comp_obj_heading_.node.parent_ocn < _comp_obj_heading_.node.ocn);
         }
       }
-      if (_comp_obj_heading_.heading_lev_markup == 0) {
-        assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_sect_A);
-      } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_sect_B) {
-        assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_sect_A);
-      } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_sect_C) {
-        assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_sect_B);
-      } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_sect_D) {
-        assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_sect_C);
-      } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_text_1) {
-        assert(_comp_obj_heading_.parent_lev_markup <= DocStructMarkupHeading.h_sect_D);
-      } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_text_2) {
-        assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_text_1);
-      } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_text_3) {
-        assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_text_2);
-      } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_text_4) {
-        assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_text_3);
-      } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_text_5) {
+      if (_comp_obj_heading_.node.heading_lev_markup == 0) {
+        assert(_comp_obj_heading_.node.parent_lev_markup == DocStructMarkupHeading.h_sect_A);
+      } else if  (_comp_obj_heading_.node.heading_lev_markup == DocStructMarkupHeading.h_sect_B) {
+        assert(_comp_obj_heading_.node.parent_lev_markup == DocStructMarkupHeading.h_sect_A);
+      } else if  (_comp_obj_heading_.node.heading_lev_markup == DocStructMarkupHeading.h_sect_C) {
+        assert(_comp_obj_heading_.node.parent_lev_markup == DocStructMarkupHeading.h_sect_B);
+      } else if  (_comp_obj_heading_.node.heading_lev_markup == DocStructMarkupHeading.h_sect_D) {
+        assert(_comp_obj_heading_.node.parent_lev_markup == DocStructMarkupHeading.h_sect_C);
+      } else if  (_comp_obj_heading_.node.heading_lev_markup == DocStructMarkupHeading.h_text_1) {
+        assert(_comp_obj_heading_.node.parent_lev_markup <= DocStructMarkupHeading.h_sect_D);
+      } else if  (_comp_obj_heading_.node.heading_lev_markup == DocStructMarkupHeading.h_text_2) {
+        assert(_comp_obj_heading_.node.parent_lev_markup == DocStructMarkupHeading.h_text_1);
+      } else if  (_comp_obj_heading_.node.heading_lev_markup == DocStructMarkupHeading.h_text_3) {
+        assert(_comp_obj_heading_.node.parent_lev_markup == DocStructMarkupHeading.h_text_2);
+      } else if  (_comp_obj_heading_.node.heading_lev_markup == DocStructMarkupHeading.h_text_4) {
+        assert(_comp_obj_heading_.node.parent_lev_markup == DocStructMarkupHeading.h_text_3);
+      } else if  (_comp_obj_heading_.node.heading_lev_markup == DocStructMarkupHeading.h_text_5) {
       }
     }
     return _comp_obj_heading_;
@@ -7361,73 +7361,81 @@ template ObjectSetter() {
 #+END_SRC
 
 ** 1. initialize structs                                            :struct:
-*** heading attribute
-
-#+name: meta_structs_init
-#+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
-
 *** [#A] _composite object_
 
 #+name: meta_structs_init
 #+BEGIN_SRC d
-struct ObjGenericComposite {
-  // size_t id;
-  string                 of_part                            = "";
-  string                 of_section                         = "";
-  string                 is_of                              = "";
-  string                 is_a                               = "";
-  string                 text                               = "";
-  string                 obj_cite_number                    = "";
-  string                 obj_cite_number_off                = "";
-  string                 obj_cite_number_bkidx              = "";
-  int                    obj_cite_number_type               = 0;
-  string[]               anchor_tags                        = [];
+struct DocObj_TypeInfo_ {
+  string                 of_part                            = ""; // frontmatter, body, backmatter
+  string                 of_section                         = ""; // toc, body, glossary, biography, book index, blurb
+  string                 is_of                              = ""; // para, block ?
+  string                 is_a                               = ""; // heading, para, table, code block, group, ...
+}
+struct DocObj_TxtAttrib_ {
   int                    indent_base                        = 0;
   int                    indent_hang                        = 0;
   bool                   bullet                             = false;
+  string                 language                           = ""; // not implemented, consider
+}
+struct DocObj_Has_ {
   bool                   inline_links                       = false;
   bool                   inline_notes_reg                   = false;
   bool                   inline_notes_star                  = false;
   bool                   contains_image_without_dimensions  = false;
-  string                 language                           = ""; // not implemented, consider
-  string                 code_block_syntax                  = "";
-  int                    table_number_of_columns            = 0;
-  double[]               table_column_widths                = [];
-  string[]               table_column_aligns                = [];
-  bool                   table_heading                      = false;
-  bool                   table_walls                        = false; // not implemented
-  int                    ocn                                = 0;
-  string                 segment_anchor_tag                 = "";
-  string                 segname_prev                       = "";
-  string                 segname_next                       = "";
-  int                    parent_lev_markup                  = 0;
-  int                    parent_ocn                         = 0;
-  int[]                  ancestors                          = [];
+}
+struct DocObj_Node_ {
+  string[string][string] node;
+  int                    ocn                                = 0; // duplicated as string with obj_cite_number
+  string                 obj_cite_number                    = ""; // duplicated as int with ocn may apply additional info for backmatter (glossary, biblio etc.)
   string                 marked_up_level                    = "9";
   int                    heading_lev_markup                 = 9;
   int                    heading_lev_collapsed              = 9;
   int[]                  dom_markedup                       = [ 0, 0, 0, 0, 0, 0, 0, 0,];
   int[]                  dom_collapsed                      = [ 0, 0, 0, 0, 0, 0, 0, 0,];
   int[]                  heading_ancestors                  = [ 0, 0, 0, 0, 0, 0, 0, 0,];
+  int                    parent_lev_markup                  = 0;
+  int                    parent_ocn                         = 0;
+  int[]                  ancestors                          = [];
+}
+struct DocObj_Table_ {
+  int                    number_of_columns                  = 0;
+  double[]               column_widths                      = [];
+  string[]               column_aligns                      = [];
+  bool                   heading                            = false;
+  bool                   walls                              = false; // not implemented
+}
+struct DocObj_CodeBlock_ {
+  string                 syntax                             = "";
+}
+struct DocObj_Pointer_ {
+  int                    doc_object                         = 0;
+  int                    html_segnames                      = 0;
+  int                    heading                            = 0;
+}
+struct DocObj_Tags_ {
   string[]               heading_ancestors_text             = [ "", "", "", "", "", "", "", "", ];
+  string                 segment_anchor_tag                 = "";
+  string                 segname_prev                       = "";
+  string                 segname_next                       = "";
   string[]               lev4_subtoc                        = [];
-  int                    heading_array_ptr                  = 0;
-  int                    ptr_doc_object                     = 0;
-  int                    ptr_html_segnames                  = 0;
-  int                    ptr_heading                        = 0;
-  int                    array_ptr                          = 0;
-  int                    heading_array_ptr_segments         = 0;
-  string[string][string] node;
+  string[]               anchor_tags                        = [];
+}
+struct DocObj_Misc_ {
+  string                 obj_cite_number_bkidx              = "";
+  string                 obj_cite_number_off                = "";
+  int                    obj_cite_number_type               = 0; // { ocn, non, bkidx }
+}
+struct ObjGenericComposite {
+  string                 text                               = "";
+  DocObj_TypeInfo_       typeinfo;
+  DocObj_TxtAttrib_      attrib;
+  DocObj_Tags_           tags;
+  DocObj_Has_            has;
+  DocObj_Table_          table;
+  DocObj_CodeBlock_      code_block;
+  DocObj_Misc_           misc;
+  DocObj_Pointer_        ptr;
+  DocObj_Node_           node;
 }
 #+END_SRC