doc object metainfo consolidation

8 files changed, 953 insertions, 946 deletions

diff --git a/src/sdp/meta/doc_debugs.d b/src/sdp/meta/doc_debugs.d
index 652fb00..c8b9dc1 100644
--- a/src/sdp/meta/doc_debugs.d
+++ b/src/sdp/meta/doc_debugs.d
@@ -39,8 +39,8 @@ template SiSUdebugs() {
       );
       foreach (key; doc_matters.xml.keys_seq.seg) {
         foreach (obj; contents[key]) {
-          if (obj.typeinfo.is_of_part != "empty") {
-            if (obj.typeinfo.is_a == "heading") {
+          if (obj.metainfo.is_of_part != "empty") {
+            if (obj.metainfo.is_a == "heading") {
               writefln(
                 "%s node: %s heading: %s %s",
                 obj.object_number,
@@ -61,11 +61,11 @@ template SiSUdebugs() {
       );
       if (key.length > 0) {
         foreach (obj; contents[key]) {
-          if (obj.typeinfo.is_of_part != "empty") {
+          if (obj.metainfo.is_of_part != "empty") {
             writefln(
               "[%s][%s]\n%s",
               obj.object_number,
-              obj.typeinfo.is_a,
+              obj.metainfo.is_a,
               obj.text
             );
           }
@@ -79,7 +79,7 @@ template SiSUdebugs() {
           writefln(
             "[%s][%s]\n%s",
             obj.object_number,
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             obj.text
           );
         }
@@ -108,7 +108,7 @@ template SiSUdebugs() {
           writefln(
             "[%s][%s]\n%s",
             obj.object_number,
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             obj.text
           );
         }
@@ -118,7 +118,7 @@ template SiSUdebugs() {
       enum DomTags { none, open, close, close_and_open, open_still, }
       foreach (sect; doc_matters.xml.keys_seq.seg) {
         foreach (obj; contents[sect]) {
-          if (obj.typeinfo.is_a == "heading") {
+          if (obj.metainfo.is_a == "heading") {
             foreach_reverse (k; 0 .. 7) {
               switch (obj.dom_markedup[k]) {
               case DomTags.close :
@@ -145,7 +145,7 @@ template SiSUdebugs() {
       writeln("--------------------");
       foreach (sect; doc_matters.xml.keys_seq.seg) {
         foreach (obj; contents[sect]) {
-          if (obj.typeinfo.is_a == "heading") {
+          if (obj.metainfo.is_a == "heading") {
             foreach_reverse (k; 0 .. 7) {
               switch (obj.dom_collapsed[k]) {
               case DomTags.close :
@@ -185,7 +185,7 @@ template SiSUdebugs() {
           writefln(
             "[%s][%s]\n%s",
             obj.object_number,
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             obj.text
           );
         }
@@ -198,7 +198,7 @@ template SiSUdebugs() {
           writefln(
             "[%s][%s]\n%s",
             obj.object_number,
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             obj.text
           );
         }
@@ -223,7 +223,7 @@ template SiSUdebugs() {
           writefln(
             "[%s][%s]\n%s",
             obj.object_number,
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             obj.text
           );
         }
@@ -236,11 +236,11 @@ template SiSUdebugs() {
         __LINE__,
       );
       foreach (obj; contents[key]) {
-        if (obj.typeinfo.is_of_part != "empty") {
+        if (obj.metainfo.is_of_part != "empty") {
           writefln(
             "* [%s][%s] %s",
             obj.object_number,
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             obj.text
           );
         }
@@ -402,7 +402,7 @@ template SiSUdebugs() {
       );
       foreach (k; doc_matters.xml.keys_seq.seg) {
         foreach (obj; contents[k]) {
-          if (obj.typeinfo.is_a == "heading") {
+          if (obj.metainfo.is_a == "heading") {
             writefln(
               "%s~ [%s] %s %s",
               obj.marked_up_level,
@@ -418,7 +418,7 @@ template SiSUdebugs() {
     debug(heading) {                         // heading
       foreach (k; doc_matters.xml.keys_seq.seg) {
         foreach (o; contents[k]) {
-          if (o.typeinfo.is_a == "heading") {
+          if (o.metainfo.is_a == "heading") {
             writefln(
               "%s* %s\n                (markup level: %s; collapsed level: %s)",
               replicate("  ", o.heading_lev_markup),
@@ -438,7 +438,7 @@ template SiSUdebugs() {
       );
       foreach (k; doc_matters.xml.keys_seq.seg) {
         foreach (obj; contents[k]) {
-          if (obj.typeinfo.is_a == "heading") {
+          if (obj.metainfo.is_a == "heading") {
             writefln(
               "%s~ [%s] %s",
               obj.marked_up_level,
@@ -627,7 +627,7 @@ template SiSUdebugs() {
               foreach (obj; contents[key]) {
                 writefln(
                   "[%s]\n%s",
-                  obj.typeinfo.is_a,
+                  obj.metainfo.is_a,
                   obj.text
                 );
               }
@@ -644,7 +644,7 @@ template SiSUdebugs() {
                 writefln(
                   "[%s][%s]\n%s",
                   obj.object_number,
-                  obj.typeinfo.is_a,
+                  obj.metainfo.is_a,
                   obj.text
                 );
               }
diff --git a/src/sdp/meta/metadoc_from_src.d b/src/sdp/meta/metadoc_from_src.d
index e9f930c..9c01a47 100644
--- a/src/sdp/meta/metadoc_from_src.d
+++ b/src/sdp/meta/metadoc_from_src.d
@@ -88,7 +88,7 @@ template SiSUdocAbstraction() {
     O          obj,
     string[]   lv_ancestors_txt,
   ) {
-    switch (obj.node.heading_lev_markup) {
+    switch (obj.metainfo.heading_lev_markup) {
     case 0:
       lv_ancestors_txt[0] = obj.text.to!string;
       foreach(k; 1..8) {
@@ -178,7 +178,7 @@ template SiSUdocAbstraction() {
     debug(dom_magic_numbers) {
       writeln("marked up: ", lev, ": ", dom);
     }
-    obj.node.dom_markedup = dom.dup;
+    obj.metainfo.dom_markedup = dom.dup;
     return obj;
   }
   pure auto obj_dom_set_collapsed_tags(O)(
@@ -222,7 +222,7 @@ template SiSUdocAbstraction() {
     debug(dom_magic_numbers) {
       writeln("collapsed: ", lev, ": ", dom);
     }
-    obj.node.dom_collapsed = dom.dup;
+    obj.metainfo.dom_collapsed = dom.dup;
     return obj;
   }
   static auto ocn_emit(int ocn_status_flag) {
@@ -323,28 +323,27 @@ template SiSUdocAbstraction() {
     ];
     string _anchor_tag;
     string toc_txt_;
-    an_object["glossary_nugget"]                 = "";
-    an_object["blurb_nugget"]                    = "";
-    comp_obj_heading_                            = comp_obj_heading_.init;
-    comp_obj_heading_.typeinfo.is_of_part        = "frontmatter";
-    comp_obj_heading_.typeinfo.is_of_section     = "toc";
-    comp_obj_heading_.typeinfo.is_of_type        = "para";
-    comp_obj_heading_.typeinfo.is_a              = "heading";
-    comp_obj_heading_.text                       = "Table of Contents";
-    comp_obj_heading_.node.ocn                   = 0;
-    comp_obj_heading_.misc.object_number_off     = "";
-    comp_obj_heading_.misc.object_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_;
+    an_object["glossary_nugget"]                     = "";
+    an_object["blurb_nugget"]                        = "";
+    comp_obj_heading_                                = comp_obj_heading_.init;
+    comp_obj_heading_.metainfo.is_of_part            = "frontmatter";
+    comp_obj_heading_.metainfo.is_of_section         = "toc";
+    comp_obj_heading_.metainfo.is_of_type            = "para";
+    comp_obj_heading_.metainfo.is_a                  = "heading";
+    comp_obj_heading_.text                           = "Table of Contents";
+    comp_obj_heading_.metainfo.ocn                   = 0;
+    comp_obj_heading_.metainfo.object_number_off     = "";
+    comp_obj_heading_.metainfo.object_number_type    = 0;
+    comp_obj_heading_.tags.segment_anchor_tag        = "toc";
+    comp_obj_heading_.metainfo.heading_lev_markup    = 4;
+    comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
+    comp_obj_heading_.metainfo.parent_ocn            = 1;
+    comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+    comp_obj_heading_.ptr.html_segnames              = html_segnames_ptr;
+    comp_obj_heading_.tags.anchor_tags               = ["toc"];
+    comp_obj_heading_.metainfo.dom_markedup          = [ 1, 1, 0, 0, 1, 0, 0, 0];
+    comp_obj_heading_.metainfo.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],
@@ -465,58 +464,56 @@ template SiSUdocAbstraction() {
             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_.typeinfo.is_of_part        = "backmatter";
-              comp_obj_heading_.typeinfo.is_of_section     = "glossary";
-              comp_obj_heading_.typeinfo.is_of_type        = "para";
-              comp_obj_heading_.typeinfo.is_a              = "heading";
-              comp_obj_heading_.text                       = "Glossary";
-              comp_obj_heading_.node.ocn                   = 0;
-              comp_obj_heading_.misc.object_number_off     = "";
-              comp_obj_heading_.misc.object_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.is_of_part        = "backmatter";
-              comp_obj_heading_.typeinfo.is_of_section     = "glossary";
-              comp_obj_heading_.typeinfo.is_of_type        = "para";
-              comp_obj_heading_.typeinfo.is_a              = "heading";
-              comp_obj_heading_.text                       = "Glossary";
-              comp_obj_heading_.node.ocn                   = 0;
-              comp_obj_heading_.misc.object_number_off     = "";
-              comp_obj_heading_.misc.object_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_;
+              comp_obj_heading_                                = comp_obj_heading_.init;
+              comp_obj_heading_.metainfo.is_of_part            = "backmatter";
+              comp_obj_heading_.metainfo.is_of_section         = "glossary";
+              comp_obj_heading_.metainfo.is_of_type            = "para";
+              comp_obj_heading_.metainfo.is_a                  = "heading";
+              comp_obj_heading_.text                           = "Glossary";
+              comp_obj_heading_.metainfo.ocn                   = 0;
+              comp_obj_heading_.metainfo.object_number_off     = "";
+              comp_obj_heading_.metainfo.object_number_type    = 0;
+              comp_obj_heading_.tags.segment_anchor_tag        = "_part_glossary";
+              comp_obj_heading_.metainfo.heading_lev_markup    = 1;
+              comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
+              comp_obj_heading_.metainfo.parent_ocn            = 1;
+              comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+              comp_obj_heading_.metainfo.dom_markedup          = [ 1, 1, 0, 0, 0, 0, 0, 0];
+              comp_obj_heading_.metainfo.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_.metainfo.is_of_part            = "backmatter";
+              comp_obj_heading_.metainfo.is_of_section         = "glossary";
+              comp_obj_heading_.metainfo.is_of_type            = "para";
+              comp_obj_heading_.metainfo.is_a                  = "heading";
+              comp_obj_heading_.text                           = "Glossary";
+              comp_obj_heading_.metainfo.ocn                   = 0;
+              comp_obj_heading_.metainfo.object_number_off     = "";
+              comp_obj_heading_.metainfo.object_number_type    = 0;
+              comp_obj_heading_.tags.segment_anchor_tag        = "glossary";
+              comp_obj_heading_.metainfo.heading_lev_markup    = 4;
+              comp_obj_heading_.metainfo.heading_lev_collapsed = 2;
+              comp_obj_heading_.metainfo.parent_ocn            = 1;
+              comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+              comp_obj_heading_.metainfo.dom_markedup          = [ 1, 1, 0, 0, 1, 0, 0, 0];
+              comp_obj_heading_.metainfo.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.typeinfo.is_of_part       = "backmatter";
-              comp_obj_para.typeinfo.is_of_section    = "glossary";
-              comp_obj_para.typeinfo.is_of_type       = "para";
-              comp_obj_para.typeinfo.is_a             = "glossary";
-              comp_obj_para.text                      = line.to!string.strip;
-              comp_obj_para.node.ocn                  = 0;
-              comp_obj_para.misc.object_number_off    = "";
-              comp_obj_para.misc.object_number_type   = 0;
-              comp_obj_para.attrib.indent_hang        = indent["hang_position"];
-              comp_obj_para.attrib.indent_base        = indent["base_position"];
-              comp_obj_para.attrib.bullet             = bullet;
-              the_glossary_section                    ~= comp_obj_para;
+              comp_obj_para                               = comp_obj_para.init;
+              comp_obj_para.metainfo.is_of_part           = "backmatter";
+              comp_obj_para.metainfo.is_of_section        = "glossary";
+              comp_obj_para.metainfo.is_of_type           = "para";
+              comp_obj_para.metainfo.is_a                 = "glossary";
+              comp_obj_para.text                          = line.to!string.strip;
+              comp_obj_para.metainfo.ocn                  = 0;
+              comp_obj_para.metainfo.object_number_off    = "";
+              comp_obj_para.metainfo.object_number_type   = 0;
+              comp_obj_para.attrib.indent_hang            = indent["hang_position"];
+              comp_obj_para.attrib.indent_base            = indent["base_position"];
+              comp_obj_para.attrib.bullet                 = bullet;
+              the_glossary_section                        ~= comp_obj_para;
             }
             obj_type_status["ocn_status"] = OCNstatus.on;
           }
@@ -573,77 +570,74 @@ template SiSUdocAbstraction() {
             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_.typeinfo.is_of_part        = "backmatter";
-              comp_obj_heading_.typeinfo.is_of_section     = "blurb";
-              comp_obj_heading_.typeinfo.is_of_type        = "para";
-              comp_obj_heading_.typeinfo.is_a              = "heading";
-              comp_obj_heading_.text                       = "Blurb";
-              comp_obj_heading_.node.ocn                   = 0;
-              comp_obj_heading_.misc.object_number_off     = "";
-              comp_obj_heading_.misc.object_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.is_of_part        = "backmatter";
-              comp_obj_heading_.typeinfo.is_of_section     = "blurb";
-              comp_obj_heading_.typeinfo.is_of_type        = "para";
-              comp_obj_heading_.typeinfo.is_a              = "heading";
-              comp_obj_heading_.text                       = "Blurb";
-              comp_obj_heading_.node.ocn                   = 0;
-              comp_obj_heading_.misc.object_number_off     = "";
-              comp_obj_heading_.misc.object_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_;
+              comp_obj_heading_                                = comp_obj_heading_.init;
+              comp_obj_heading_.metainfo.is_of_part            = "backmatter";
+              comp_obj_heading_.metainfo.is_of_section         = "blurb";
+              comp_obj_heading_.metainfo.is_of_type            = "para";
+              comp_obj_heading_.metainfo.is_a                  = "heading";
+              comp_obj_heading_.text                           = "Blurb";
+              comp_obj_heading_.metainfo.ocn                   = 0;
+              comp_obj_heading_.metainfo.object_number_off     = "";
+              comp_obj_heading_.metainfo.object_number_type    = 0;
+              comp_obj_heading_.tags.segment_anchor_tag        = "_part_blurb";
+              comp_obj_heading_.metainfo.heading_lev_markup    = 1;
+              comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
+              comp_obj_heading_.metainfo.parent_ocn            = 1;
+              comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+              comp_obj_heading_.metainfo.dom_markedup          = [ 1, 1, 0, 0, 0, 0, 0, 0];
+              comp_obj_heading_.metainfo.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_.metainfo.is_of_part            = "backmatter";
+              comp_obj_heading_.metainfo.is_of_section         = "blurb";
+              comp_obj_heading_.metainfo.is_of_type            = "para";
+              comp_obj_heading_.metainfo.is_a                  = "heading";
+              comp_obj_heading_.text                           = "Blurb";
+              comp_obj_heading_.metainfo.ocn                   = 0;
+              comp_obj_heading_.metainfo.object_number_off     = "";
+              comp_obj_heading_.metainfo.object_number_type    = 0;
+              comp_obj_heading_.tags.segment_anchor_tag        = "blurb";
+              comp_obj_heading_.metainfo.heading_lev_markup    = 4;
+              comp_obj_heading_.metainfo.heading_lev_collapsed = 2;
+              comp_obj_heading_.metainfo.parent_ocn            = 1;
+              comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+              comp_obj_heading_.tags.anchor_tags               = ["blurb"];
+              comp_obj_heading_.metainfo.dom_markedup          = [ 1, 1, 0, 0, 1, 0, 0, 0];
+              comp_obj_heading_.metainfo.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_.typeinfo.is_of_part        = "backmatter";
-              comp_obj_heading_.typeinfo.is_of_section     = "blurb";
-              comp_obj_heading_.typeinfo.is_of_type        = "para";
-              comp_obj_heading_.typeinfo.is_a              = "heading";
-              comp_obj_heading_.text                       = line.to!string;
-              comp_obj_heading_.node.ocn                   = 0;
-              comp_obj_heading_.misc.object_number_off     = "";
-              comp_obj_heading_.misc.object_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;
+              comp_obj_heading_                                = comp_obj_heading_.init;
+              comp_obj_heading_.metainfo.is_of_part            = "backmatter";
+              comp_obj_heading_.metainfo.is_of_section         = "blurb";
+              comp_obj_heading_.metainfo.is_of_type            = "para";
+              comp_obj_heading_.metainfo.is_a                  = "heading";
+              comp_obj_heading_.text                           = line.to!string;
+              comp_obj_heading_.metainfo.ocn                   = 0;
+              comp_obj_heading_.metainfo.object_number_off     = "";
+              comp_obj_heading_.metainfo.object_number_type    = 0;
+              comp_obj_heading_.tags.segment_anchor_tag        = "blurb";
+              comp_obj_heading_.metainfo.heading_lev_markup    = an_object["lev_markup_number"].to!int;    // make int, remove need to conv
+              comp_obj_heading_.metainfo.heading_lev_collapsed = an_object["lev_collapsed_number"].to!int; // make int, remove need to conv
+              comp_obj_heading_.metainfo.parent_ocn            = 1;
+              comp_obj_heading_.metainfo.parent_lev_markup     = 0;
               the_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.typeinfo.is_of_part       = "backmatter";
-              comp_obj_para.typeinfo.is_of_section    = "blurb";
-              comp_obj_para.typeinfo.is_of_type       = "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.node.ocn                  = 0;
-              comp_obj_para.misc.object_number_off    = "";
-              comp_obj_para.misc.object_number_type   = 0;
-              comp_obj_para.attrib.indent_hang        = indent["hang_position"];
-              comp_obj_para.attrib.indent_base        = indent["base_position"];
-              comp_obj_para.has.inline_links          = true;
-              comp_obj_para.attrib.bullet             = bullet;
-              the_blurb_section                       ~= comp_obj_para;
+              comp_obj_para                               = comp_obj_para.init;
+              comp_obj_para.metainfo.is_of_part           = "backmatter";
+              comp_obj_para.metainfo.is_of_section        = "blurb";
+              comp_obj_para.metainfo.is_of_type           = "para";
+              comp_obj_para.metainfo.is_a                 = "blurb";
+              comp_obj_para.text                          = munge.url_links(line.to!string.strip).replaceFirst(rgx.para_attribs, "");
+              comp_obj_para.metainfo.ocn                  = 0;
+              comp_obj_para.metainfo.object_number_off    = "";
+              comp_obj_para.metainfo.object_number_type   = 0;
+              comp_obj_para.attrib.indent_hang            = indent["hang_position"];
+              comp_obj_para.attrib.indent_base            = indent["base_position"];
+              comp_obj_para.has.inline_links              = true;
+              comp_obj_para.attrib.bullet                 = bullet;
+              the_blurb_section                           ~= comp_obj_para;
             }
             obj_type_status["ocn_status"] = OCNstatus.on;
           }
@@ -742,10 +736,10 @@ template SiSUdocAbstraction() {
                 }
                 an_object[an_object_key]                ~= line ~= "\n";
                 comp_obj_comment                        = comp_obj_comment.init;
-                comp_obj_comment.typeinfo.is_of_part    = "comment"; // breaks flow
-                comp_obj_comment.typeinfo.is_of_section = "comment"; // breaks flow
-                comp_obj_comment.typeinfo.is_of_type    = "comment";
-                comp_obj_comment.typeinfo.is_a          = "comment";
+                comp_obj_comment.metainfo.is_of_part    = "comment"; // breaks flow
+                comp_obj_comment.metainfo.is_of_section = "comment"; // breaks flow
+                comp_obj_comment.metainfo.is_of_type    = "comment";
+                comp_obj_comment.metainfo.is_a          = "comment";
                 comp_obj_comment.text                   = an_object[an_object_key].strip;
                 the_document_body_section               ~= comp_obj_comment;
                 _common_reset_(line_occur, an_object, obj_type_status);
@@ -895,7 +889,6 @@ template SiSUdocAbstraction() {
               auto comp_obj_heading
                 = node_construct.node_emitter_heading(
                   an_object["substantive"],                     // string
-                  an_object["lev"],                             // string
                   an_object["lev_markup_number"],               // string
                   an_object["lev_collapsed_number"],            // string
                   segment_anchor_tag_that_object_belongs_to,    // string
@@ -946,15 +939,15 @@ template SiSUdocAbstraction() {
               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.typeinfo.is_of_part                         = "body";
-              comp_obj_para.typeinfo.is_of_section                      = "body";
-              comp_obj_para.typeinfo.is_of_type                         = "para";
-              comp_obj_para.typeinfo.is_a                               = "para";
+              comp_obj_para.metainfo.is_of_part                         = "body";
+              comp_obj_para.metainfo.is_of_section                      = "body";
+              comp_obj_para.metainfo.is_of_type                         = "para";
+              comp_obj_para.metainfo.is_a                               = "para";
               comp_obj_para.text                                        = an_object["substantive"].to!string.strip;
-              comp_obj_para.node.ocn                                    = obj_cite_digits.digit;
-              comp_obj_para.misc.object_number_off                      = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-              comp_obj_para.misc.o_n_book_index                         = obj_cite_digits.bkidx;
-              comp_obj_para.misc.object_number_type                     = obj_cite_digits.type;
+              comp_obj_para.metainfo.ocn                                = obj_cite_digits.digit;
+              comp_obj_para.metainfo.object_number_off                  = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+              comp_obj_para.metainfo.o_n_book_index                     = obj_cite_digits.bkidx;
+              comp_obj_para.metainfo.object_number_type                 = obj_cite_digits.type;
               comp_obj_para.attrib.indent_hang                          = indent["hang_position"];
               comp_obj_para.attrib.indent_base                          = indent["base_position"];
               comp_obj_para.attrib.bullet                               = bullet;
@@ -980,23 +973,23 @@ template SiSUdocAbstraction() {
       } // close after non code, other blocks or regular text
       /+ unless (the_document_body_section.length == 0) ? +/
       if (the_document_body_section.length > 0) {
-        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"))
+        if (((the_document_body_section[$-1].metainfo.is_a == "para")
+          || (the_document_body_section[$-1].metainfo.is_a == "heading")
+          || (the_document_body_section[$-1].metainfo.is_a == "quote")
+          || (the_document_body_section[$-1].metainfo.is_a == "group")
+          || (the_document_body_section[$-1].metainfo.is_a == "block")
+          || (the_document_body_section[$-1].metainfo.is_a == "verse"))
         && (the_document_body_section.length > previous_length)) {
-          if ((the_document_body_section[$-1].typeinfo.is_a == "heading")
-          && (the_document_body_section[$-1].node.heading_lev_markup < 5)) {
+          if ((the_document_body_section[$-1].metainfo.is_a == "heading")
+          && (the_document_body_section[$-1].metainfo.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[$-1].typeinfo.is_a == "verse") {
+          if (the_document_body_section[$-1].metainfo.is_a == "verse") {
             /+ scan for endnotes for whole poem (each verse in poem) +/
             foreach (i; previous_length .. the_document_body_section.length) {
-              if (the_document_body_section[i].typeinfo.is_a == "verse") {
+              if (the_document_body_section[i].metainfo.is_a == "verse") {
                 if ((the_document_body_section[i].text).match(
                   rgx.inline_notes_delimiter_al_regular_number_note
                 )) {
@@ -1043,21 +1036,20 @@ template SiSUdocAbstraction() {
       }
     }
     if (an_object["glossary_nugget"].length == 0) {
-      comp_obj_heading_                            = comp_obj_heading_.init;
-      comp_obj_heading_.typeinfo.is_of_part        = "empty";
-      comp_obj_heading_.typeinfo.is_of_section     = "empty";
-      comp_obj_heading_.typeinfo.is_of_type        = "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_.misc.object_number_off     = "";
-      comp_obj_heading_.misc.object_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_;
+      comp_obj_heading_                                = comp_obj_heading_.init;
+      comp_obj_heading_.metainfo.is_of_part            = "empty";
+      comp_obj_heading_.metainfo.is_of_section         = "empty";
+      comp_obj_heading_.metainfo.is_of_type            = "para";
+      comp_obj_heading_.metainfo.is_a                  = "heading";
+      comp_obj_heading_.text                           = "(skip) there is no Glossary section";
+      comp_obj_heading_.metainfo.ocn                   = 0;
+      comp_obj_heading_.metainfo.object_number_off     = "";
+      comp_obj_heading_.metainfo.object_number_type    = 0;
+      comp_obj_heading_.metainfo.heading_lev_markup    = 1;
+      comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
+      comp_obj_heading_.metainfo.parent_ocn            = 1;
+      comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+      the_glossary_section                             ~= comp_obj_heading_;
     } else {
       writeln("gloss");
     }
@@ -1071,55 +1063,52 @@ template SiSUdocAbstraction() {
     auto biblio_ordered
       = biblio._bibliography_(biblio_unsorted_incomplete, bib_arr_json);
     if (biblio_ordered.length > 0) {
-      comp_obj_heading_                            = comp_obj_heading_.init;
-      comp_obj_heading_.typeinfo.is_of_part        = "backmatter";
-      comp_obj_heading_.typeinfo.is_of_section     = "bibliography";
-      comp_obj_heading_.typeinfo.is_of_type        = "para";
-      comp_obj_heading_.typeinfo.is_a              = "heading";
-      comp_obj_heading_.text                       = "Bibliography";
-      comp_obj_heading_.node.ocn                   = 0;
-      comp_obj_heading_.misc.object_number_off     = "";
-      comp_obj_heading_.misc.object_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.is_of_part        = "backmatter";
-      comp_obj_heading_.typeinfo.is_of_section     = "bibliography";
-      comp_obj_heading_.typeinfo.is_of_type        = "para";
-      comp_obj_heading_.typeinfo.is_a              = "heading";
-      comp_obj_heading_.text                       = "Bibliography";
-      comp_obj_heading_.node.ocn                   = 0;
-      comp_obj_heading_.misc.object_number_off     = "";
-      comp_obj_heading_.misc.object_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_;
+      comp_obj_heading_                                = comp_obj_heading_.init;
+      comp_obj_heading_.metainfo.is_of_part            = "backmatter";
+      comp_obj_heading_.metainfo.is_of_section         = "bibliography";
+      comp_obj_heading_.metainfo.is_of_type            = "para";
+      comp_obj_heading_.metainfo.is_a                  = "heading";
+      comp_obj_heading_.text                           = "Bibliography";
+      comp_obj_heading_.metainfo.ocn                   = 0;
+      comp_obj_heading_.metainfo.object_number_off     = "";
+      comp_obj_heading_.metainfo.object_number_type    = 0;
+      comp_obj_heading_.tags.segment_anchor_tag        = "_part_bibliography";
+      comp_obj_heading_.metainfo.heading_lev_markup    = 1;
+      comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
+      comp_obj_heading_.metainfo.parent_ocn            = 1;
+      comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+      the_bibliography_section                         ~= comp_obj_heading_;
+      comp_obj_heading_                                = comp_obj_heading_.init;
+      comp_obj_heading_.metainfo.is_of_part            = "backmatter";
+      comp_obj_heading_.metainfo.is_of_section         = "bibliography";
+      comp_obj_heading_.metainfo.is_of_type            = "para";
+      comp_obj_heading_.metainfo.is_a                  = "heading";
+      comp_obj_heading_.text                           = "Bibliography";
+      comp_obj_heading_.metainfo.ocn                   = 0;
+      comp_obj_heading_.metainfo.object_number_off     = "";
+      comp_obj_heading_.metainfo.object_number_type    = 0;
+      comp_obj_heading_.tags.segment_anchor_tag        = "bibliography";
+      comp_obj_heading_.metainfo.heading_lev_markup    = 4;
+      comp_obj_heading_.metainfo.heading_lev_collapsed = 2;
+      comp_obj_heading_.metainfo.parent_ocn            = 1;
+      comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+      comp_obj_heading_.tags.anchor_tags               = ["bibliography"];
+      the_bibliography_section                         ~= comp_obj_heading_;
     } else {
-      comp_obj_heading_                            = comp_obj_heading_.init;
-      comp_obj_heading_.typeinfo.is_of_part        = "empty";
-      comp_obj_heading_.typeinfo.is_of_section     = "empty";
-      comp_obj_heading_.typeinfo.is_of_type        = "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_.misc.object_number_off     = "";
-      comp_obj_heading_.misc.object_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_;
+      comp_obj_heading_                                = comp_obj_heading_.init;
+      comp_obj_heading_.metainfo.is_of_part            = "empty";
+      comp_obj_heading_.metainfo.is_of_section         = "empty";
+      comp_obj_heading_.metainfo.is_of_type            = "para";
+      comp_obj_heading_.metainfo.is_a                  = "heading";
+      comp_obj_heading_.text                           = "(skip) there is no Bibliography";
+      comp_obj_heading_.metainfo.ocn                   = 0;
+      comp_obj_heading_.metainfo.object_number_off     = "";
+      comp_obj_heading_.metainfo.object_number_type    = 0;
+      comp_obj_heading_.metainfo.heading_lev_markup    = 1;
+      comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
+      comp_obj_heading_.metainfo.parent_ocn            = 1;
+      comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+      the_bibliography_section                         ~= comp_obj_heading_;
     }
     string out_;
     foreach (entry; biblio_ordered) {
@@ -1137,20 +1126,20 @@ template SiSUdocAbstraction() {
         ((entry["place"].str.empty) ? "" : ", " ~ entry["place"].str),
         ((entry["url"].str.empty) ? "" : ", [" ~ entry["url"].str ~ "]"),
       );
-      comp_obj_para                           = comp_obj_para.init;
-      comp_obj_para.typeinfo.is_of_part       = "backmatter";
-      comp_obj_para.typeinfo.is_of_section    = "bibliography";
-      comp_obj_para.typeinfo.is_of_type       = "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.misc.object_number_off    = "";
-      comp_obj_para.misc.object_number_type   = 0;
-      comp_obj_para.attrib.indent_hang        = 0;
-      comp_obj_para.attrib.indent_base        = 1;
-      comp_obj_para.attrib.bullet             = bullet;
-      comp_obj_para.tags.anchor_tags          = anchor_tags;
-      the_bibliography_section                ~= comp_obj_para;
+      comp_obj_para                               = comp_obj_para.init;
+      comp_obj_para.metainfo.is_of_part           = "backmatter";
+      comp_obj_para.metainfo.is_of_section        = "bibliography";
+      comp_obj_para.metainfo.is_of_type           = "para";
+      comp_obj_para.metainfo.is_a                 = "bibliography";
+      comp_obj_para.text                          = out_.to!string.strip;
+      comp_obj_para.metainfo.ocn                  = 0;
+      comp_obj_para.metainfo.object_number_off    = "";
+      comp_obj_para.metainfo.object_number_type   = 0;
+      comp_obj_para.attrib.indent_hang            = 0;
+      comp_obj_para.attrib.indent_base            = 1;
+      comp_obj_para.attrib.bullet                 = bullet;
+      comp_obj_para.tags.anchor_tags              = anchor_tags;
+      the_bibliography_section                    ~= comp_obj_para;
     }
     debug(bibliosection) {
       foreach (o; the_bibliography_section) {
@@ -1174,22 +1163,21 @@ template SiSUdocAbstraction() {
       }
     }
     if (an_object["blurb_nugget"].length == 0) {
-      comp_obj_heading_                            = comp_obj_heading_.init;
-      comp_obj_heading_.typeinfo.is_of_part        = "empty";
-      comp_obj_heading_.typeinfo.is_of_section     = "empty";
-      comp_obj_heading_.typeinfo.is_of_type        = "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.misc.object_number_off         = "";
-      comp_obj_para.misc.object_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_;
+      comp_obj_heading_                                = comp_obj_heading_.init;
+      comp_obj_heading_.metainfo.is_of_part            = "empty";
+      comp_obj_heading_.metainfo.is_of_section         = "empty";
+      comp_obj_heading_.metainfo.is_of_type            = "para";
+      comp_obj_heading_.metainfo.is_a                  = "heading";
+      comp_obj_heading_.text                           = "(skip) there is no Blurb section";
+      comp_obj_heading_.metainfo.ocn                   = 0;
+      comp_obj_para.metainfo.object_number_off         = "";
+      comp_obj_para.metainfo.object_number_type        = 0;
+      comp_obj_heading_.tags.segment_anchor_tag        = "";
+      comp_obj_heading_.metainfo.heading_lev_markup    = 1;
+      comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
+      comp_obj_heading_.metainfo.parent_ocn            = 1;
+      comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+      the_blurb_section                                ~= comp_obj_heading_;
     }
     debug(blurb) {
       foreach (blurb; the_blurb_section) {
@@ -1200,17 +1188,17 @@ template SiSUdocAbstraction() {
       "hang_position" : 1,
       "base_position" : 1,
     ];
-    comp_obj_toc                           = comp_obj_toc.init;
-    comp_obj_toc.typeinfo.is_of_part       = "frontmatter";
-    comp_obj_toc.typeinfo.is_of_section    = "toc";
-    comp_obj_toc.typeinfo.is_of_type       = "para";
-    comp_obj_toc.typeinfo.is_a             = "toc";
-    comp_obj_toc.node.ocn                  = 0;
-    comp_obj_toc.misc.object_number_off    = "";
-    comp_obj_toc.misc.object_number_type   = 0;
-    comp_obj_toc.attrib.indent_hang        = indent["hang_position"];
-    comp_obj_toc.attrib.indent_base        = indent["base_position"];
-    comp_obj_toc.attrib.bullet             = false;
+    comp_obj_toc                               = comp_obj_toc.init;
+    comp_obj_toc.metainfo.is_of_part           = "frontmatter";
+    comp_obj_toc.metainfo.is_of_section        = "toc";
+    comp_obj_toc.metainfo.is_of_type           = "para";
+    comp_obj_toc.metainfo.is_a                 = "toc";
+    comp_obj_toc.metainfo.ocn                  = 0;
+    comp_obj_toc.metainfo.object_number_off    = "";
+    comp_obj_toc.metainfo.object_number_type   = 0;
+    comp_obj_toc.attrib.indent_hang            = indent["hang_position"];
+    comp_obj_toc.attrib.indent_base            = indent["base_position"];
+    comp_obj_toc.attrib.bullet                 = false;
     if (the_endnotes_section.length > 1) {
       toc_txt_ = format(
         "{ %s }%s%s%s",
@@ -1341,7 +1329,7 @@ template SiSUdocAbstraction() {
       html_segnames ~= "endnotes";
       html_segnames_ptr = html_segnames_ptr_cntr;
       foreach (ref section; the_endnotes_section) {
-        if (section.node.heading_lev_markup == 4) {
+        if (section.metainfo.heading_lev_markup == 4) {
           section.ptr.html_segnames = html_segnames_ptr;
           break;
         }
@@ -1352,7 +1340,7 @@ template SiSUdocAbstraction() {
       html_segnames ~= "glossary";
       html_segnames_ptr = html_segnames_ptr_cntr;
       foreach (ref section; the_glossary_section) {
-        if (section.node.heading_lev_markup == 4) {
+        if (section.metainfo.heading_lev_markup == 4) {
           section.ptr.html_segnames = html_segnames_ptr;
           break;
         }
@@ -1363,7 +1351,7 @@ template SiSUdocAbstraction() {
       html_segnames ~= "bibliography";
       html_segnames_ptr = html_segnames_ptr_cntr;
       foreach (ref section; the_bibliography_section) {
-        if (section.node.heading_lev_markup == 4) {
+        if (section.metainfo.heading_lev_markup == 4) {
           section.ptr.html_segnames = html_segnames_ptr;
           break;
         }
@@ -1374,13 +1362,13 @@ template SiSUdocAbstraction() {
       html_segnames ~= "bookindex";
       html_segnames_ptr = html_segnames_ptr_cntr;
       foreach (ref section; the_bookindex_section["scroll"]) {
-        if (section.node.heading_lev_markup == 4) {
+        if (section.metainfo.heading_lev_markup == 4) {
           section.ptr.html_segnames = html_segnames_ptr;
           break;
         }
       }
       foreach (ref section; the_bookindex_section["seg"]) {
-        if (section.node.heading_lev_markup == 4) {
+        if (section.metainfo.heading_lev_markup == 4) {
           section.ptr.html_segnames = html_segnames_ptr;
           break;
         }
@@ -1391,7 +1379,7 @@ template SiSUdocAbstraction() {
       html_segnames ~= "blurb";
       html_segnames_ptr = html_segnames_ptr_cntr;
       foreach (ref section; the_blurb_section) {
-        if (section.node.heading_lev_markup == 4) {
+        if (section.metainfo.heading_lev_markup == 4) {
           section.ptr.html_segnames = html_segnames_ptr;
           break;
         }
@@ -1442,20 +1430,20 @@ template SiSUdocAbstraction() {
       return obj;
     }
     foreach (ref obj; the_document_head_section) {
-      if (obj.typeinfo.is_a == "heading") {
+      if (obj.metainfo.is_a == "heading") {
         debug(dom) {
           writeln(obj.text);
         }
-        if (obj.node.heading_lev_markup <= 4) {
+        if (obj.metainfo.heading_lev_markup <= 4) {
           segnames_0_4 ~= obj.tags.segment_anchor_tag;
         }
-        if (obj.node.heading_lev_markup == 0) {
+        if (obj.metainfo.heading_lev_markup == 0) {
           /+ TODO second hit (of two) with same assertion failure, check, fix and reinstate
-          assert( obj.node.ocn == 1,
-            "Title OCN should be 1 not: " ~ obj.node.ocn.to!string); // bug introduced 0.18.1
+          assert( obj.metainfo.ocn == 1,
+            "Title OCN should be 1 not: " ~ obj.metainfo.ocn.to!string); // bug introduced 0.18.1
           +/
-          obj.node.ocn = 1;
-          obj.misc.object_number_type = OCNtype.ocn;
+          obj.metainfo.ocn = 1;
+          obj.metainfo.object_number_type = OCNtype.ocn;
         }
         /+ dom structure (marked up & collapsed) +/
         if ((opt_action.html)
@@ -1465,8 +1453,8 @@ template SiSUdocAbstraction() {
         || (opt_action.sqlite_discrete)
         || (opt_action.sqlite_update)
         || (opt_action.postgresql)) {
-          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_dom_structure_set_markup_tags(obj, dom_markedup, obj.metainfo.heading_lev_markup);
+          obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.metainfo.heading_lev_collapsed);
         }
         obj = obj_heading_ancestors(obj, lv_ancestors_txt);
       }
@@ -1476,10 +1464,10 @@ template SiSUdocAbstraction() {
       dom_markedup_buffer = dom_markedup.dup;
       dom_collapsed_buffer = dom_collapsed.dup;
       foreach (ref obj; the_table_of_contents_section["scroll"]) {
-        if (obj.typeinfo.is_a == "heading") {
-          if (obj.node.heading_lev_markup <= 4) {
+        if (obj.metainfo.is_a == "heading") {
+          if (obj.metainfo.heading_lev_markup <= 4) {
             segnames_0_4 ~= obj.tags.segment_anchor_tag;
-            if (obj.node.heading_lev_markup == 4) {
+            if (obj.metainfo.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]);
@@ -1493,8 +1481,8 @@ template SiSUdocAbstraction() {
           || (opt_action.sqlite_discrete)
           || (opt_action.sqlite_update)
           || (opt_action.postgresql)) {
-            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_dom_structure_set_markup_tags(obj, dom_markedup, obj.metainfo.heading_lev_markup);
+            obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.metainfo.heading_lev_collapsed);
           }
           obj = obj_heading_ancestors(obj, lv_ancestors_txt);
         }
@@ -1503,13 +1491,13 @@ template SiSUdocAbstraction() {
       dom_markedup = dom_markedup_buffer.dup;
       dom_collapsed = dom_collapsed_buffer.dup;
       foreach (ref obj; the_table_of_contents_section["seg"]) {
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           debug(dom) {
             writeln(obj.text);
           }
-          if (obj.node.heading_lev_markup <= 4) {
+          if (obj.metainfo.heading_lev_markup <= 4) {
             segnames_0_4 ~= obj.tags.segment_anchor_tag;
-            if (obj.node.heading_lev_markup == 4) {
+            if (obj.metainfo.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]);
@@ -1519,8 +1507,8 @@ template SiSUdocAbstraction() {
           || (opt_action.html_scroll)
           || (opt_action.html_seg)
           || (opt_action.epub)) {
-            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_dom_structure_set_markup_tags(obj, dom_markedup, obj.metainfo.heading_lev_markup);
+            obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.metainfo.heading_lev_collapsed);
           }
           obj = obj_heading_ancestors(obj, lv_ancestors_txt);
         }
@@ -1529,13 +1517,13 @@ template SiSUdocAbstraction() {
     /+ multiple 1~ levels, loop through document body +/
     if (the_document_body_section.length > 1) {
       foreach (ref obj; the_document_body_section) {
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           debug(dom) {
             writeln(obj.text);
           }
-          if (obj.node.heading_lev_markup <= 4) {
+          if (obj.metainfo.heading_lev_markup <= 4) {
             segnames_0_4 ~= obj.tags.segment_anchor_tag;
-            if (obj.node.heading_lev_markup == 4) {
+            if (obj.metainfo.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) {
@@ -1553,11 +1541,11 @@ template SiSUdocAbstraction() {
           || (opt_action.sqlite_discrete)
           || (opt_action.sqlite_update)
           || (opt_action.postgresql)) {
-            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_dom_structure_set_markup_tags(obj, dom_markedup, obj.metainfo.heading_lev_markup);
+            obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.metainfo.heading_lev_collapsed);
           }
           obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-        } else if (obj.typeinfo.is_a == "para") {
+        } else if (obj.metainfo.is_a == "para") {
            _images ~= extract_images(obj.text);
            obj = _image_dimensions(manifest_matter, obj);
         }
@@ -1571,15 +1559,15 @@ template SiSUdocAbstraction() {
       dom_markedup = dom_markedup_buffer.dup;
       dom_collapsed = dom_collapsed_buffer.dup;
       foreach (ref obj; the_endnotes_section) {
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           debug(dom) {
             writeln(obj.text);
           }
           obj_cite_digits = ocn_emit(OCNstatus.on);
-          obj.node.ocn = obj_cite_digits.digit;
-          if (obj.node.heading_lev_markup <= 4) {
+          obj.metainfo.ocn = obj_cite_digits.digit;
+          if (obj.metainfo.heading_lev_markup <= 4) {
             segnames_0_4 ~= obj.tags.segment_anchor_tag;
-            if (obj.node.heading_lev_markup == 4) {
+            if (obj.metainfo.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];
@@ -1596,8 +1584,8 @@ template SiSUdocAbstraction() {
           || (opt_action.sqlite_discrete)
           || (opt_action.sqlite_update)
           || (opt_action.postgresql)) {
-            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_dom_structure_set_markup_tags(obj, dom_markedup, obj.metainfo.heading_lev_markup);
+            obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.metainfo.heading_lev_collapsed);
           }
           obj = obj_heading_ancestors(obj, lv_ancestors_txt);
         }
@@ -1606,15 +1594,15 @@ template SiSUdocAbstraction() {
     /+ optional only one 1~ level +/
     if (the_glossary_section.length > 1) {
       foreach (ref obj; the_glossary_section) {
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           debug(dom) {
             writeln(obj.text);
           }
           obj_cite_digits = ocn_emit(OCNstatus.on);
-          obj.node.ocn = obj_cite_digits.digit;
-          if (obj.node.heading_lev_markup <= 4) {
+          obj.metainfo.ocn = obj_cite_digits.digit;
+          if (obj.metainfo.heading_lev_markup <= 4) {
             segnames_0_4 ~= obj.tags.segment_anchor_tag;
-            if (obj.node.heading_lev_markup == 4) {
+            if (obj.metainfo.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];
@@ -1631,28 +1619,28 @@ template SiSUdocAbstraction() {
           || (opt_action.sqlite_discrete)
           || (opt_action.sqlite_update)
           || (opt_action.postgresql)) {
-            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_dom_structure_set_markup_tags(obj, dom_markedup, obj.metainfo.heading_lev_markup);
+            obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.metainfo.heading_lev_collapsed);
           }
           obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-        } else if (obj.typeinfo.is_a == "glossary") {
+        } else if (obj.metainfo.is_a == "glossary") {
           obj_cite_digits = ocn_emit(OCNstatus.on);
-          obj.node.ocn = obj_cite_digits.digit;
+          obj.metainfo.ocn = obj_cite_digits.digit;
         }
       }
     }
     /+ optional only one 1~ level +/
     if (the_bibliography_section.length > 1) {
       foreach (ref obj; the_bibliography_section) {
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           debug(dom) {
             writeln(obj.text);
           }
           obj_cite_digits = ocn_emit(OCNstatus.on);
-          obj.node.ocn = obj_cite_digits.digit;
-          if (obj.node.heading_lev_markup <= 4) {
+          obj.metainfo.ocn = obj_cite_digits.digit;
+          if (obj.metainfo.heading_lev_markup <= 4) {
             segnames_0_4 ~= obj.tags.segment_anchor_tag;
-            if (obj.node.heading_lev_markup == 4) {
+            if (obj.metainfo.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];
@@ -1669,13 +1657,13 @@ template SiSUdocAbstraction() {
           || (opt_action.sqlite_discrete)
           || (opt_action.sqlite_update)
           || (opt_action.postgresql)) {
-            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_dom_structure_set_markup_tags(obj, dom_markedup, obj.metainfo.heading_lev_markup);
+            obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.metainfo.heading_lev_collapsed);
           }
           obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-        } else if (obj.typeinfo.is_a == "bibliography") {
+        } else if (obj.metainfo.is_a == "bibliography") {
           obj_cite_digits = ocn_emit(OCNstatus.on);
-          obj.node.ocn = obj_cite_digits.on;
+          obj.metainfo.ocn = obj_cite_digits.on;
         }
       }
     }
@@ -1688,14 +1676,14 @@ template SiSUdocAbstraction() {
       dom_markedup_buffer = dom_markedup.dup;
       dom_collapsed_buffer = dom_collapsed.dup;
       foreach (ref obj; the_bookindex_section["scroll"]) {
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           debug(dom) {
           }
           obj_cite_digits = ocn_emit(OCNstatus.on);
-          obj.node.ocn = obj_cite_digits.on;
-          if (obj.node.heading_lev_markup <= 4) {
+          obj.metainfo.ocn = obj_cite_digits.on;
+          if (obj.metainfo.heading_lev_markup <= 4) {
             segnames_0_4 ~= obj.tags.segment_anchor_tag;
-            if (obj.node.heading_lev_markup == 4) {
+            if (obj.metainfo.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];
@@ -1712,29 +1700,29 @@ template SiSUdocAbstraction() {
           || (opt_action.sqlite_discrete)
           || (opt_action.sqlite_update)
           || (opt_action.postgresql)) {
-            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_dom_structure_set_markup_tags(obj, dom_markedup, obj.metainfo.heading_lev_markup);
+            obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.metainfo.heading_lev_collapsed);
           }
           obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-        } else if (obj.typeinfo.is_a == "bookindex") {
+        } else if (obj.metainfo.is_a == "bookindex") {
           obj_cite_digits                   = ocn_emit(OCNstatus.bkidx);
-          obj.node.ocn                      = obj_cite_digits.digit;
-          obj.misc.o_n_book_index           = obj_cite_digits.bkidx;
-          obj.misc.object_number_type       = OCNtype.bkidx;
+          obj.metainfo.ocn                      = obj_cite_digits.digit;
+          obj.metainfo.o_n_book_index           = obj_cite_digits.bkidx;
+          obj.metainfo.object_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.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           debug(dom) {
             writeln(obj.text);
           }
-          obj.node.ocn = ++ocn_;
-          if (obj.node.heading_lev_markup <= 4) {
+          obj.metainfo.ocn = ++ocn_;
+          if (obj.metainfo.heading_lev_markup <= 4) {
             segnames_0_4 ~= obj.tags.segment_anchor_tag;
-            if (obj.node.heading_lev_markup == 4) {
+            if (obj.metainfo.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];
@@ -1751,14 +1739,14 @@ template SiSUdocAbstraction() {
           || (opt_action.sqlite_discrete)
           || (opt_action.sqlite_update)
           || (opt_action.postgresql)) {
-            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_dom_structure_set_markup_tags(obj, dom_markedup, obj.metainfo.heading_lev_markup);
+            obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.metainfo.heading_lev_collapsed);
           }
           obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-        } else if (obj.typeinfo.is_a == "bookindex") {
+        } else if (obj.metainfo.is_a == "bookindex") {
           ocn_bidx_ = ++ocn_bkidx_;
-          obj.misc.o_n_book_index           = ocn_bidx_; // FIX need to distinguish from regular ocn
-          obj.misc.object_number_type       = OCNtype.bkidx;
+          obj.metainfo.o_n_book_index           = ocn_bidx_; // FIX need to distinguish from regular ocn
+          obj.metainfo.object_number_type       = OCNtype.bkidx;
         }
       }
       /+ TODO assert failure, reinstate
@@ -1769,15 +1757,15 @@ template SiSUdocAbstraction() {
     /+ optional only one 1~ level +/
     if (the_blurb_section.length > 1) {
       foreach (ref obj; the_blurb_section) {
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           debug(dom) {
             writeln(obj.text);
           }
           obj_cite_digits = ocn_emit(OCNstatus.on);
-          obj.node.ocn = obj_cite_digits.on;
-          if (obj.node.heading_lev_markup <= 4) {
+          obj.metainfo.ocn = obj_cite_digits.on;
+          if (obj.metainfo.heading_lev_markup <= 4) {
             segnames_0_4 ~= obj.tags.segment_anchor_tag;
-            if (obj.node.heading_lev_markup == 4) {
+            if (obj.metainfo.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];
@@ -1794,39 +1782,38 @@ template SiSUdocAbstraction() {
           || (opt_action.sqlite_discrete)
           || (opt_action.sqlite_update)
           || (opt_action.postgresql)) {
-            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_dom_structure_set_markup_tags(obj, dom_markedup, obj.metainfo.heading_lev_markup);
+            obj = obj_dom_set_collapsed_tags(obj, dom_collapsed, obj.metainfo.heading_lev_collapsed);
           }
           obj = obj_heading_ancestors(obj, lv_ancestors_txt);
-        } else if (obj.typeinfo.is_a == "blurb") {
+        } else if (obj.metainfo.is_a == "blurb") {
           obj_cite_digits = ocn_emit(OCNstatus.off);
-          obj.misc.object_number_off  = obj_cite_digits.off.to!string;
-          obj.misc.object_number_type = OCNtype.non;
+          obj.metainfo.object_number_off  = obj_cite_digits.off.to!string;
+          obj.metainfo.object_number_type = OCNtype.non;
         }
       }
     }
       /+ TODO
         - note create/insert heading object sole purpose eof close all open tags
           sort out:
-          - obj.node.dom_markedup = dom_markedup;
-          - obj.node.dom_collapsed = dom_collapsed;
+          - obj.metainfo.dom_markedup = dom_markedup;
+          - obj.metainfo.dom_collapsed = dom_collapsed;
       +/
-    comp_obj_heading_                            = comp_obj_heading_.init;
-    comp_obj_heading_.typeinfo.is_of_part        = "empty";
-    comp_obj_heading_.typeinfo.is_of_section     = "empty";
-    comp_obj_heading_.typeinfo.is_of_type        = "para";
-    comp_obj_heading_.typeinfo.is_a              = "heading";
-    comp_obj_heading_.node.ocn                   = 0;
-    comp_obj_para.misc.object_number_off         = "";
-    comp_obj_para.misc.object_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_                                = comp_obj_heading_.init;
+    comp_obj_heading_.metainfo.is_of_part            = "empty";
+    comp_obj_heading_.metainfo.is_of_section         = "empty";
+    comp_obj_heading_.metainfo.is_of_type            = "para";
+    comp_obj_heading_.metainfo.is_a                  = "heading";
+    comp_obj_heading_.metainfo.ocn                   = 0;
+    comp_obj_para.metainfo.object_number_off         = "";
+    comp_obj_para.metainfo.object_number_type        = 0;
+    comp_obj_heading_.tags.segment_anchor_tag        = "";
+    comp_obj_heading_.metainfo.heading_lev_markup    = 9;
+    comp_obj_heading_.metainfo.heading_lev_collapsed = 9;
+    comp_obj_heading_.metainfo.parent_ocn            = 0;
+    comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+    comp_obj_heading_.metainfo.dom_markedup          = dom_markedup.dup;
+    comp_obj_heading_.metainfo.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);
@@ -2388,14 +2375,14 @@ template SiSUdocAbstraction() {
             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.typeinfo.is_of_part           = "body";
-            comp_obj_block.typeinfo.is_of_section        = "body";
-            comp_obj_block.typeinfo.is_of_type           = "block";
-            comp_obj_block.typeinfo.is_a                 = "verse";
-            comp_obj_block.node.ocn                      = obj_cite_digits.on;
-            comp_obj_block.misc.object_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-            comp_obj_block.misc.o_n_book_index           = obj_cite_digits.bkidx;
-            comp_obj_block.misc.object_number_type       = obj_cite_digits.type;
+            comp_obj_block.metainfo.is_of_part           = "body";
+            comp_obj_block.metainfo.is_of_section        = "body";
+            comp_obj_block.metainfo.is_of_type           = "block";
+            comp_obj_block.metainfo.is_a                 = "verse";
+            comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
+            comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+            comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
+            comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
             comp_obj_block.text                          = an_object["substantive"];
             comp_obj_block.has.inline_notes_reg          = substantive_obj_misc_tuple[sObj.notes_reg];
             comp_obj_block.has.inline_notes_star         = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2445,14 +2432,14 @@ template SiSUdocAbstraction() {
           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.typeinfo.is_of_part           = "body";
-          comp_obj_block.typeinfo.is_of_section        = "body";
-          comp_obj_block.typeinfo.is_of_type           = "block";
-          comp_obj_block.typeinfo.is_a                 = "verse";
-          comp_obj_block.node.ocn                      = obj_cite_digits.on;
-          comp_obj_block.misc.object_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-          comp_obj_block.misc.o_n_book_index           = obj_cite_digits.bkidx;
-          comp_obj_block.misc.object_number_type       = obj_cite_digits.type;
+          comp_obj_block.metainfo.is_of_part           = "body";
+          comp_obj_block.metainfo.is_of_section        = "body";
+          comp_obj_block.metainfo.is_of_type           = "block";
+          comp_obj_block.metainfo.is_a                 = "verse";
+          comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
+          comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+          comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
+          comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
           comp_obj_block.text                          = an_object["substantive"];
           comp_obj_block.has.inline_notes_reg          = substantive_obj_misc_tuple[sObj.notes_reg];
           comp_obj_block.has.inline_notes_star         = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2487,14 +2474,14 @@ template SiSUdocAbstraction() {
           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.typeinfo.is_of_part           = "body";
-          comp_obj_block.typeinfo.is_of_section        = "body";
-          comp_obj_block.typeinfo.is_of_type           = "block";
-          comp_obj_block.typeinfo.is_a                 = "verse";
-          comp_obj_block.node.ocn                      = obj_cite_digits.on;
-          comp_obj_block.misc.object_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-          comp_obj_block.misc.o_n_book_index           = obj_cite_digits.bkidx;
-          comp_obj_block.misc.object_number_type       = obj_cite_digits.type;
+          comp_obj_block.metainfo.is_of_part           = "body";
+          comp_obj_block.metainfo.is_of_section        = "body";
+          comp_obj_block.metainfo.is_of_type           = "block";
+          comp_obj_block.metainfo.is_a                 = "verse";
+          comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
+          comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+          comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
+          comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
           comp_obj_block.text                          = an_object["substantive"];
           comp_obj_block.has.inline_notes_reg          = substantive_obj_misc_tuple[sObj.notes_reg];
           comp_obj_block.has.inline_notes_star         = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2544,14 +2531,14 @@ template SiSUdocAbstraction() {
           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.typeinfo.is_of_part           = "body";
-          comp_obj_block.typeinfo.is_of_section        = "body";
-          comp_obj_block.typeinfo.is_of_type           = "block";
-          comp_obj_block.typeinfo.is_a                 = "verse";
-          comp_obj_block.node.ocn                      = obj_cite_digits.on;
-          comp_obj_block.misc.object_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-          comp_obj_block.misc.o_n_book_index           = obj_cite_digits.bkidx;
-          comp_obj_block.misc.object_number_type       = obj_cite_digits.type;
+          comp_obj_block.metainfo.is_of_part           = "body";
+          comp_obj_block.metainfo.is_of_section        = "body";
+          comp_obj_block.metainfo.is_of_type           = "block";
+          comp_obj_block.metainfo.is_a                 = "verse";
+          comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
+          comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+          comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
+          comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
           comp_obj_block.text                          = an_object["substantive"];
           comp_obj_block.has.inline_notes_reg          = substantive_obj_misc_tuple[sObj.notes_reg];
           comp_obj_block.has.inline_notes_star         = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2843,10 +2830,10 @@ template SiSUdocAbstraction() {
       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.node.ocn                      = obj_cite_digits.on;
-      comp_obj_block.misc.object_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-      comp_obj_block.misc.o_n_book_index           = obj_cite_digits.bkidx;
-      comp_obj_block.misc.object_number_type       = obj_cite_digits.type;
+      comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
+      comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+      comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
+      comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
       comp_obj_block                               = 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;
@@ -2902,14 +2889,14 @@ template SiSUdocAbstraction() {
       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.typeinfo.is_of_part           = "body";
-      comp_obj_block.typeinfo.is_of_section        = "body";
-      comp_obj_block.typeinfo.is_of_type           = "block";
-      comp_obj_block.typeinfo.is_a                 = "quote";
-      comp_obj_block.node.ocn                      = obj_cite_digits.on;
-      comp_obj_block.misc.object_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-      comp_obj_block.misc.o_n_book_index           = obj_cite_digits.bkidx;
-      comp_obj_block.misc.object_number_type       = obj_cite_digit_type;
+      comp_obj_block.metainfo.is_of_part           = "body";
+      comp_obj_block.metainfo.is_of_section        = "body";
+      comp_obj_block.metainfo.is_of_type           = "block";
+      comp_obj_block.metainfo.is_a                 = "quote";
+      comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
+      comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+      comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
+      comp_obj_block.metainfo.object_number_type   = obj_cite_digit_type;
       comp_obj_block.text                          = an_object["substantive"];
       comp_obj_block.has.inline_notes_reg          = substantive_obj_misc_tuple[sObj.notes_reg];
       comp_obj_block.has.inline_notes_star         = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2945,14 +2932,14 @@ template SiSUdocAbstraction() {
       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.typeinfo.is_of_part           = "body";
-      comp_obj_block.typeinfo.is_of_section        = "body";
-      comp_obj_block.typeinfo.is_of_type           = "block";
-      comp_obj_block.typeinfo.is_a                 = "group";
-      comp_obj_block.node.ocn                      = obj_cite_digits.on;
-      comp_obj_block.misc.object_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-      comp_obj_block.misc.o_n_book_index           = obj_cite_digits.bkidx;
-      comp_obj_block.misc.object_number_type       = obj_cite_digits.type;
+      comp_obj_block.metainfo.is_of_part           = "body";
+      comp_obj_block.metainfo.is_of_section        = "body";
+      comp_obj_block.metainfo.is_of_type           = "block";
+      comp_obj_block.metainfo.is_a                 = "group";
+      comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
+      comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+      comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
+      comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
       comp_obj_block.text                          = an_object["substantive"];
       comp_obj_block.has.inline_notes_reg          = substantive_obj_misc_tuple[sObj.notes_reg];
       comp_obj_block.has.inline_notes_star         = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2987,14 +2974,14 @@ template SiSUdocAbstraction() {
         = 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.typeinfo.is_of_part           = "body";
-      comp_obj_block.typeinfo.is_of_section        = "body";
-      comp_obj_block.typeinfo.is_of_type           = "block";
-      comp_obj_block.typeinfo.is_a                 = "block";
-      comp_obj_block.node.ocn                      = obj_cite_digits.on;
-      comp_obj_block.misc.object_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-      comp_obj_block.misc.o_n_book_index           = obj_cite_digits.bkidx;
-      comp_obj_block.misc.object_number_type       = obj_cite_digit_type;
+      comp_obj_block.metainfo.is_of_part           = "body";
+      comp_obj_block.metainfo.is_of_section        = "body";
+      comp_obj_block.metainfo.is_of_type           = "block";
+      comp_obj_block.metainfo.is_a                 = "block";
+      comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
+      comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+      comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
+      comp_obj_block.metainfo.object_number_type   = obj_cite_digit_type;
       comp_obj_block.text                          = an_object["substantive"];
       comp_obj_block.has.inline_notes_reg          = substantive_obj_misc_tuple[sObj.notes_reg];
       comp_obj_block.has.inline_notes_star         = substantive_obj_misc_tuple[sObj.notes_star];
@@ -3025,14 +3012,14 @@ template SiSUdocAbstraction() {
           an_object["is"]
         );
       comp_obj_poem_ocn                               = comp_obj_poem_ocn.init;
-      comp_obj_poem_ocn.typeinfo.is_of_part           = "body";
-      comp_obj_poem_ocn.typeinfo.is_of_section        = "body";
-      comp_obj_poem_ocn.typeinfo.is_of_type           = "block";
-      comp_obj_poem_ocn.typeinfo.is_a                 = "poem";
-      comp_obj_poem_ocn.node.ocn                      = obj_cite_digits.on;
-      comp_obj_poem_ocn.misc.object_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string; //
-      comp_obj_poem_ocn.misc.o_n_book_index           = obj_cite_digits.bkidx; //
-      comp_obj_poem_ocn.misc.object_number_type       = obj_cite_digits.type;
+      comp_obj_poem_ocn.metainfo.is_of_part           = "body";
+      comp_obj_poem_ocn.metainfo.is_of_section        = "body";
+      comp_obj_poem_ocn.metainfo.is_of_type           = "block";
+      comp_obj_poem_ocn.metainfo.is_a                 = "poem";
+      comp_obj_poem_ocn.metainfo.ocn                  = obj_cite_digits.on;
+      comp_obj_poem_ocn.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string; //
+      comp_obj_poem_ocn.metainfo.o_n_book_index       = obj_cite_digits.bkidx; //
+      comp_obj_poem_ocn.metainfo.object_number_type   = obj_cite_digits.type;
       comp_obj_poem_ocn.text                          = "";
       the_document_body_section                       ~= comp_obj_poem_ocn;
       obj_type_status["blocks"]                       = TriState.off;
@@ -3064,14 +3051,14 @@ template SiSUdocAbstraction() {
       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.typeinfo.is_of_part            = "body";
-      comp_obj_code.typeinfo.is_of_section         = "body";
-      comp_obj_code.typeinfo.is_of_type            = "block";
-      comp_obj_code.typeinfo.is_a                  = "code";
-      comp_obj_code.node.ocn                       = obj_cite_digits.on;
-      comp_obj_block.misc.object_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-      comp_obj_block.misc.o_n_book_index           = obj_cite_digits.bkidx;
-      comp_obj_block.misc.object_number_type       = obj_cite_digits.type;
+      comp_obj_code.metainfo.is_of_part            = "body";
+      comp_obj_code.metainfo.is_of_section         = "body";
+      comp_obj_code.metainfo.is_of_type            = "block";
+      comp_obj_code.metainfo.is_a                  = "code";
+      comp_obj_code.metainfo.ocn                   = obj_cite_digits.on;
+      comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+      comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
+      comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
       comp_obj_code.text                           = an_object["substantive"];
       comp_obj_code.has.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
       comp_obj_code.has.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
@@ -3107,10 +3094,10 @@ template SiSUdocAbstraction() {
         = 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.node.ocn                      = obj_cite_digits.on;
-      comp_obj_block.misc.object_number_off        = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-      comp_obj_block.misc.o_n_book_index           = obj_cite_digits.bkidx;
-      comp_obj_block.misc.object_number_type       = obj_cite_digits.type;
+      comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
+      comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+      comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
+      comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
       comp_obj_block                               = 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;
@@ -3563,10 +3550,10 @@ template SiSUdocAbstraction() {
     return ref H  table_head,
   ) {
     static auto rgx = Rgx();
-    table_object.typeinfo.is_of_part      = "body";
-    table_object.typeinfo.is_of_section   = "body";
-    table_object.typeinfo.is_of_type      = "block";
-    table_object.typeinfo.is_a            = "table";
+    table_object.metainfo.is_of_part      = "body";
+    table_object.metainfo.is_of_section   = "body";
+    table_object.metainfo.is_of_type      = "block";
+    table_object.metainfo.is_a            = "table";
     table_object.has.inline_notes_reg     = false;
     table_object.has.inline_notes_star    = false;
     table_object.has.inline_links         = false;
@@ -4302,48 +4289,48 @@ template SiSUdocAbstraction() {
           _anchor_tag,
         );
         toc_txt_= munge.url_links(toc_txt_);
-        comp_obj_toc                            = comp_obj_toc.init;
-        comp_obj_toc.typeinfo.is_of_part        = "frontmatter";
-        comp_obj_toc.typeinfo.is_of_section     = "toc";
-        comp_obj_toc.typeinfo.is_of_type        = "para";
-        comp_obj_toc.typeinfo.is_a              = "toc";
-        comp_obj_toc.node.ocn                   = 0;
-        comp_obj_toc.misc.object_number_off     = "";
-        comp_obj_toc.misc.object_number_type    = 0;
-        comp_obj_toc.attrib.indent_hang         = indent["hang_position"];
-        comp_obj_toc.attrib.indent_base         = indent["base_position"];
-        comp_obj_toc.attrib.bullet              = false;
-        comp_obj_toc.text                       = toc_txt_.to!string.strip;
-        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.metainfo.is_of_part         = "frontmatter";
+        comp_obj_toc.metainfo.is_of_section      = "toc";
+        comp_obj_toc.metainfo.is_of_type         = "para";
+        comp_obj_toc.metainfo.is_a               = "toc";
+        comp_obj_toc.metainfo.ocn                = 0;
+        comp_obj_toc.metainfo.object_number_off  = "";
+        comp_obj_toc.metainfo.object_number_type = 0;
+        comp_obj_toc.attrib.indent_hang          = indent["hang_position"];
+        comp_obj_toc.attrib.indent_base          = indent["base_position"];
+        comp_obj_toc.attrib.bullet               = false;
+        comp_obj_toc.text                        = toc_txt_.to!string.strip;
+        comp_obj_toc.has.inline_links            = true;
+        the_table_of_contents_section["scroll"]  ~= comp_obj_toc;
       } else {
         indent=[
           "hang_position" : 0,
           "base_position" : 0,
         ];
-        comp_obj_toc                            = comp_obj_toc.init;
-        comp_obj_toc.typeinfo.is_of_part        = "frontmatter";
-        comp_obj_toc.typeinfo.is_of_section     = "toc";
-        comp_obj_toc.typeinfo.is_of_type        = "para";
-        comp_obj_toc.typeinfo.is_a              = "toc";
-        comp_obj_toc.node.ocn                   = 0;
-        comp_obj_toc.misc.object_number_off     = "";
-        comp_obj_toc.misc.object_number_type    = 0;
-        comp_obj_toc.attrib.indent_hang         = indent["hang_position"];
-        comp_obj_toc.attrib.indent_base         = indent["base_position"];
-        comp_obj_toc.attrib.bullet              = false;
-        comp_obj_toc.text                       = "Table of Contents";
-        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.metainfo.is_of_part         = "frontmatter";
+        comp_obj_toc.metainfo.is_of_section      = "toc";
+        comp_obj_toc.metainfo.is_of_type         = "para";
+        comp_obj_toc.metainfo.is_a               = "toc";
+        comp_obj_toc.metainfo.ocn                = 0;
+        comp_obj_toc.metainfo.object_number_off  = "";
+        comp_obj_toc.metainfo.object_number_type = 0;
+        comp_obj_toc.attrib.indent_hang          = indent["hang_position"];
+        comp_obj_toc.attrib.indent_base          = indent["base_position"];
+        comp_obj_toc.attrib.bullet               = false;
+        comp_obj_toc.text                        = "Table of Contents";
+        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.typeinfo.is_of_part          = "frontmatter";
-      comp_obj_toc.typeinfo.is_of_section       = "toc";
-      comp_obj_toc.typeinfo.is_of_type          = "para";
-      comp_obj_toc.typeinfo.is_a                = "toc";
-      comp_obj_toc.node.ocn                     = 0;
-      comp_obj_toc.misc.object_number_off       = "";
-      comp_obj_toc.misc.object_number_type      = 0;
+      comp_obj_toc.metainfo.is_of_part          = "frontmatter";
+      comp_obj_toc.metainfo.is_of_section       = "toc";
+      comp_obj_toc.metainfo.is_of_type          = "para";
+      comp_obj_toc.metainfo.is_a                = "toc";
+      comp_obj_toc.metainfo.ocn                 = 0;
+      comp_obj_toc.metainfo.object_number_off   = "";
+      comp_obj_toc.metainfo.object_number_type  = 0;
       comp_obj_toc.attrib.bullet                = false;
       comp_obj_toc.has.inline_links             = true;
       switch (obj_["lev_markup_number"].to!int) {
@@ -4853,16 +4840,16 @@ template SiSUdocAbstraction() {
         (oa_j.type == JSON_TYPE.OBJECT)
       );
       if (obj_is_ == "heading") {
-        oa_j.object["object_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["object_number"] = _comp_obj_heading.metainfo.ocn;
+        oa_j.object["lev_markup_number"] = _comp_obj_heading.metainfo.heading_lev_markup;
+        oa_j.object["lev_collapsed_number"] = _comp_obj_heading.metainfo.heading_lev_collapsed;
         oa_j.object["heading_ptr"]
           = _comp_obj_heading.ptr.heading;
         oa_j.object["doc_object_ptr"]
           = _comp_obj_heading.ptr.doc_object;
       }
-      oa_j.object["parent_object_number"] = _comp_obj_heading.node.parent_ocn;
-      oa_j.object["parent_lev_markup_number"] = _comp_obj_heading.node.parent_lev_markup;
+      oa_j.object["parent_object_number"] = _comp_obj_heading.metainfo.parent_ocn;
+      oa_j.object["parent_lev_markup_number"] = _comp_obj_heading.metainfo.parent_lev_markup;
       _obj_attrib = oa_j.toString();
       return _obj_attrib;
     }
@@ -5038,44 +5025,42 @@ template SiSUdocAbstraction() {
       && 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_.typeinfo.is_of_part        = "backmatter";
-        comp_obj_heading_.typeinfo.is_of_section     = "bookindex";
-        comp_obj_heading_.typeinfo.is_of_type        = "para";
-        comp_obj_heading_.typeinfo.is_a              = "heading";
-        comp_obj_heading_.text                       = "Book Index";
-        comp_obj_heading_.node.ocn                   = 0;
-        comp_obj_heading_.misc.object_number_off     = "";
-        comp_obj_heading_.misc.object_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_;
+        comp_obj_heading_                                = comp_obj_heading_.init;
+        comp_obj_heading_.metainfo.is_of_part            = "backmatter";
+        comp_obj_heading_.metainfo.is_of_section         = "bookindex";
+        comp_obj_heading_.metainfo.is_of_type            = "para";
+        comp_obj_heading_.metainfo.is_a                  = "heading";
+        comp_obj_heading_.text                           = "Book Index";
+        comp_obj_heading_.metainfo.ocn                   = 0;
+        comp_obj_heading_.metainfo.object_number_off     = "";
+        comp_obj_heading_.metainfo.object_number_type    = 0;
+        comp_obj_heading_.tags.segment_anchor_tag        = "_part_book_index";
+        comp_obj_heading_.metainfo.heading_lev_markup    = 1;
+        comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
+        comp_obj_heading_.metainfo.parent_ocn            = 1;
+        comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+        comp_obj_heading.has.inline_links                = true;
+        bookindex_section["scroll"]                      ~= comp_obj_heading_;
+        bookindex_section["seg"]                         ~= comp_obj_heading_;
         ++mkn;
-        comp_obj_heading_                            = comp_obj_heading_.init;
-        comp_obj_heading_.typeinfo.is_of_part        = "backmatter";
-        comp_obj_heading_.typeinfo.is_of_section     = "bookindex";
-        comp_obj_heading_.typeinfo.is_of_type        = "para";
-        comp_obj_heading_.typeinfo.is_a              = "heading";
-        comp_obj_heading_.text                       = "Index";
-        comp_obj_heading_.node.ocn                   = 0;
-        comp_obj_heading_.misc.object_number_off     = "";
-        comp_obj_heading_.misc.object_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_;
+        comp_obj_heading_                                = comp_obj_heading_.init;
+        comp_obj_heading_.metainfo.is_of_part            = "backmatter";
+        comp_obj_heading_.metainfo.is_of_section         = "bookindex";
+        comp_obj_heading_.metainfo.is_of_type            = "para";
+        comp_obj_heading_.metainfo.is_a                  = "heading";
+        comp_obj_heading_.text                           = "Index";
+        comp_obj_heading_.metainfo.ocn                   = 0;
+        comp_obj_heading_.metainfo.object_number_off     = "";
+        comp_obj_heading_.metainfo.object_number_type    = 0;
+        comp_obj_heading_.tags.segment_anchor_tag        = "bookindex";
+        comp_obj_heading_.metainfo.heading_lev_markup    = 4;
+        comp_obj_heading_.metainfo.heading_lev_collapsed = 2;
+        comp_obj_heading_.metainfo.parent_ocn            = 1;
+        comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+        comp_obj_heading.has.inline_links                = false;
+        comp_obj_heading_.tags.anchor_tags               = ["bookindex"];
+        bookindex_section["scroll"]                      ~= comp_obj_heading_;
+        bookindex_section["seg"]                         ~= comp_obj_heading_;
         ++mkn;
         import std.array : appender;
         auto buffer = appender!(char[])();
@@ -5132,40 +5117,39 @@ template SiSUdocAbstraction() {
             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.typeinfo.is_of_part       = "backmatter";
-          comp_obj_para.typeinfo.is_of_section    = "bookindex";
-          comp_obj_para.typeinfo.is_of_type       = "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.misc.object_number_off    = "";
-          comp_obj_para.misc.object_number_type   = 0;
-          comp_obj_para.tags.anchor_tags          = bi_tmp_tags;
-          comp_obj_para.attrib.indent_hang        = 0;
-          comp_obj_para.attrib.indent_base        = 1;
-          comp_obj_para.attrib.bullet             = false;
-          comp_obj_para.has.inline_links          = true;
-          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.metainfo.is_of_part         = "backmatter";
+          comp_obj_para.metainfo.is_of_section      = "bookindex";
+          comp_obj_para.metainfo.is_of_type         = "para";
+          comp_obj_para.metainfo.is_a               = "bookindex";
+          comp_obj_para.text                        = bi_tmp_scroll.to!string.strip;
+          comp_obj_para.metainfo.ocn                = 0;
+          comp_obj_para.metainfo.object_number_off  = "";
+          comp_obj_para.metainfo.object_number_type = 0;
+          comp_obj_para.tags.anchor_tags            = bi_tmp_tags;
+          comp_obj_para.attrib.indent_hang          = 0;
+          comp_obj_para.attrib.indent_base          = 1;
+          comp_obj_para.attrib.bullet               = false;
+          comp_obj_para.has.inline_links            = true;
+          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_.node.ocn                   = 0;
-        comp_obj_heading_.misc.object_number_off     = "";
-        comp_obj_heading_.misc.object_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_;
+        comp_obj_heading_                                = comp_obj_heading_.init;
+        comp_obj_heading_.text                           = "(skip) there is no Book Index";
+        comp_obj_heading_.metainfo.ocn                   = 0;
+        comp_obj_heading_.metainfo.object_number_off     = "";
+        comp_obj_heading_.metainfo.object_number_type    = 0;
+        comp_obj_heading_.metainfo.heading_lev_markup    = 1;
+        comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
+        comp_obj_heading_.metainfo.parent_ocn            = 1;
+        comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+        bookindex_section["scroll"]                      ~= comp_obj_heading_;
+        bookindex_section["seg"]                         ~= comp_obj_heading_;
       }
       auto t = tuple(bookindex_section, obj_cite_digits);
       return t;
@@ -5183,12 +5167,12 @@ template SiSUdocAbstraction() {
       int                   cntr,
     )
     in {
-      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((contents_am[cntr].metainfo.is_a == "para")
+      || (contents_am[cntr].metainfo.is_a == "heading")
+      || (contents_am[cntr].metainfo.is_a == "quote")
+      || (contents_am[cntr].metainfo.is_a == "group")
+      || (contents_am[cntr].metainfo.is_a == "block")
+      || (contents_am[cntr].metainfo.is_a == "verse"));
       assert(cntr >= previous_count);
       previous_count=cntr;
       assert(
@@ -5264,79 +5248,76 @@ template SiSUdocAbstraction() {
       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_.typeinfo.is_of_part        = "backmatter";
-        comp_obj_heading_.typeinfo.is_of_section     = "endnotes";
-        comp_obj_heading_.typeinfo.is_of_type        = "para";
-        comp_obj_heading_.typeinfo.is_a              = "heading";
-        comp_obj_heading_.text                       = "Endnotes";
-        comp_obj_heading_.node.ocn                   = 0;
-        comp_obj_heading_.misc.object_number_off     = "";
-        comp_obj_heading_.misc.object_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_;
+        comp_obj_heading_                                = comp_obj_heading_.init;
+        comp_obj_heading_.metainfo.is_of_part            = "backmatter";
+        comp_obj_heading_.metainfo.is_of_section         = "endnotes";
+        comp_obj_heading_.metainfo.is_of_type            = "para";
+        comp_obj_heading_.metainfo.is_a                  = "heading";
+        comp_obj_heading_.text                           = "Endnotes";
+        comp_obj_heading_.metainfo.ocn                   = 0;
+        comp_obj_heading_.metainfo.object_number_off     = "";
+        comp_obj_heading_.metainfo.object_number_type    = 0;
+        comp_obj_heading_.tags.segment_anchor_tag        = "_part_endnotes";
+        comp_obj_heading_.metainfo.heading_lev_markup    = 1;
+        comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
+        comp_obj_heading_.metainfo.parent_ocn            = 1;
+        comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+        the_endnotes_section                             ~= comp_obj_heading_;
         ++mkn;
-        comp_obj_heading_                            = comp_obj_heading_.init;
-        comp_obj_heading_.typeinfo.is_of_part        = "backmatter";
-        comp_obj_heading_.typeinfo.is_of_section     = "endnotes";
-        comp_obj_heading_.typeinfo.is_of_type        = "para";
-        comp_obj_heading_.typeinfo.is_a              = "heading";
-        comp_obj_heading_.text                       = "Endnotes";
-        comp_obj_heading_.node.ocn                   = 0;
-        comp_obj_heading_.misc.object_number_off     = "";
-        comp_obj_heading_.misc.object_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_;
+        comp_obj_heading_                                = comp_obj_heading_.init;
+        comp_obj_heading_.metainfo.is_of_part            = "backmatter";
+        comp_obj_heading_.metainfo.is_of_section         = "endnotes";
+        comp_obj_heading_.metainfo.is_of_type            = "para";
+        comp_obj_heading_.metainfo.is_a                  = "heading";
+        comp_obj_heading_.text                           = "Endnotes";
+        comp_obj_heading_.metainfo.ocn                   = 0;
+        comp_obj_heading_.metainfo.object_number_off     = "";
+        comp_obj_heading_.metainfo.object_number_type    = 0;
+        comp_obj_heading_.tags.segment_anchor_tag        = "endnotes";
+        comp_obj_heading_.metainfo.heading_lev_markup    = 4;
+        comp_obj_heading_.metainfo.heading_lev_collapsed = 2;
+        comp_obj_heading_.metainfo.parent_ocn            = 1;
+        comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+        comp_obj_heading_.tags.anchor_tags               = ["endnotes"];
+        the_endnotes_section                             ~= comp_obj_heading_;
         ++mkn;
       } else {
-        comp_obj_heading_                            = comp_obj_heading_.init;
-        comp_obj_heading_.typeinfo.is_of_part        = "empty";
-        comp_obj_heading_.typeinfo.is_of_section     = "empty";
-        comp_obj_heading_.typeinfo.is_of_type        = "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_.misc.object_number_off     = "";
-        comp_obj_heading_.misc.object_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_;
+        comp_obj_heading_                                = comp_obj_heading_.init;
+        comp_obj_heading_.metainfo.is_of_part            = "empty";
+        comp_obj_heading_.metainfo.is_of_section         = "empty";
+        comp_obj_heading_.metainfo.is_of_type            = "para";
+        comp_obj_heading_.metainfo.is_a                  = "heading";
+        comp_obj_heading_.text                           = "(skip) there are no Endnotes";
+        comp_obj_heading_.metainfo.ocn                   = 0;
+        comp_obj_heading_.metainfo.object_number_off     = "";
+        comp_obj_heading_.metainfo.object_number_type    = 0;
+        comp_obj_heading_.metainfo.heading_lev_markup    = 1;
+        comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
+        comp_obj_heading_.metainfo.parent_ocn            = 1;
+        comp_obj_heading_.metainfo.parent_lev_markup     = 0;
+        the_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_.typeinfo.is_of_part        = "backmatter";
-        comp_obj_endnote_.typeinfo.is_of_section     = "endnote";
-        comp_obj_endnote_.typeinfo.is_of_type        = "para";
-        comp_obj_endnote_.typeinfo.is_a              = "endnote";
-        comp_obj_endnote_.node.ocn                   = 0;
-        comp_obj_heading_.misc.object_number_off     = "";
-        comp_obj_heading_.misc.object_number_type    = 0;
-        comp_obj_endnote_.attrib.indent_hang         = 0;
-        comp_obj_endnote_.attrib.indent_base         = 0;
-        comp_obj_endnote_.attrib.bullet              = false;
+        comp_obj_endnote_                                = comp_obj_endnote_.init;
+        comp_obj_endnote_.metainfo.is_of_part            = "backmatter";
+        comp_obj_endnote_.metainfo.is_of_section         = "endnote";
+        comp_obj_endnote_.metainfo.is_of_type            = "para";
+        comp_obj_endnote_.metainfo.is_a                  = "endnote";
+        comp_obj_endnote_.metainfo.ocn                   = 0;
+        comp_obj_heading_.metainfo.object_number_off     = "";
+        comp_obj_heading_.metainfo.object_number_type    = 0;
+        comp_obj_endnote_.attrib.indent_hang             = 0;
+        comp_obj_endnote_.attrib.indent_base             = 0;
+        comp_obj_endnote_.attrib.bullet                  = false;
         foreach (i, endnote; endnotes_["notes"]) {
-          auto     m                            = endnote.matchFirst(rgx.note_ref);
-          string   notenumber                   = m.captures[1].to!string;
-          string   anchor_tag                   = "note_" ~ notenumber;
-          comp_obj_endnote_.tags.anchor_tags    = [ endnotes_["anchor"][i] ];
-          comp_obj_endnote_.has.inline_links    = true;
-          comp_obj_endnote_.text                = endnote.strip;
-          the_endnotes_section                  ~= comp_obj_endnote_;
+          auto     m                                     = endnote.matchFirst(rgx.note_ref);
+          string   notenumber                            = m.captures[1].to!string;
+          string   anchor_tag                            = "note_" ~ notenumber;
+          comp_obj_endnote_.tags.anchor_tags             = [ endnotes_["anchor"][i] ];
+          comp_obj_endnote_.has.inline_links             = true;
+          comp_obj_endnote_.text                         = endnote.strip;
+          the_endnotes_section                           ~= comp_obj_endnote_;
         }
       }
       auto t = tuple(the_endnotes_section, obj_cite_digits);
@@ -5486,12 +5467,12 @@ template SiSUdocAbstraction() {
         p_["object_number"] = lv4;
       }
       ObjGenericComposite comp_obj_location;
-      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_["object_number"];
-      comp_obj_location.node.parent_lev_markup  = p_["lev_markup_number"];
+      comp_obj_location                             = comp_obj_location.init;
+      comp_obj_location.metainfo.is_a               = is_;
+      comp_obj_location.metainfo.ocn                = obj_cite_digits.on;
+      comp_obj_location.tags.segment_anchor_tag     = segment_anchor_tag.to!string;
+      comp_obj_location.metainfo.parent_ocn         = p_["object_number"];
+      comp_obj_location.metainfo.parent_lev_markup  = p_["lev_markup_number"];
       debug(node) {
         if (lev_markup_number.match(rgx.levels_numbered_headings)) {
           writeln("x ", _node.to!string);
@@ -5499,16 +5480,15 @@ template SiSUdocAbstraction() {
           writeln("- ", _node.to!string);
         }
       }
-      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);
+      assert(comp_obj_location.metainfo.parent_lev_markup >= 4);
+      assert(comp_obj_location.metainfo.parent_lev_markup <= 7);
+      assert(comp_obj_location.metainfo.parent_ocn >= 0);
       return comp_obj_location;
     }
     invariant() {
     }
-    ObjGenericComposite node_emitter_heading(T,L,Lm,Lc,Ta,N,C,P,LA,I,PSn,fNr,fNs,fL)(
+    ObjGenericComposite node_emitter_heading(T,Lm,Lc,Ta,N,C,P,LA,I,PSn,fNr,fNs,fL)(
       T   _text,
-      L   lev,
       Lm  lev_markup_number,
       Lc  lev_collapsed_number,
       Ta  segment_anchor_tag,
@@ -5638,20 +5618,19 @@ template SiSUdocAbstraction() {
       }
       ObjGenericComposite _comp_obj_heading_;
       _comp_obj_heading_                                  = _comp_obj_heading_.init;
-      _comp_obj_heading_.typeinfo.is_of_part              = "body";
-      _comp_obj_heading_.typeinfo.is_of_section           = "body";
-      _comp_obj_heading_.typeinfo.is_of_type              = "para";
-      _comp_obj_heading_.typeinfo.is_a                    = "heading";
+      _comp_obj_heading_.metainfo.is_of_part              = "body";
+      _comp_obj_heading_.metainfo.is_of_section           = "body";
+      _comp_obj_heading_.metainfo.is_of_type              = "para";
+      _comp_obj_heading_.metainfo.is_a                    = "heading";
       _comp_obj_heading_.text                             = _text.to!string.strip;
-      _comp_obj_heading_.node.ocn                         = obj_cite_digits.on;
-      _comp_obj_heading_.misc.object_number_off           = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-      _comp_obj_heading_.misc.object_number_type          = obj_cite_digits.type;
+      _comp_obj_heading_.metainfo.ocn                     = obj_cite_digits.on;
+      _comp_obj_heading_.metainfo.object_number_off       = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
+      _comp_obj_heading_.metainfo.object_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_["object_number"];
-      _comp_obj_heading_.node.parent_lev_markup           = p_["lev_markup_number"];
+      _comp_obj_heading_.metainfo.heading_lev_markup      = (!(lev_markup_number.empty) ? lev_markup_number.to!int : 0);
+      _comp_obj_heading_.metainfo.heading_lev_collapsed   = (!(lev_collapsed_number.empty) ? lev_collapsed_number.to!int : 0);
+      _comp_obj_heading_.metainfo.parent_ocn              = p_["object_number"];
+      _comp_obj_heading_.metainfo.parent_lev_markup       = p_["lev_markup_number"];
       _comp_obj_heading_.tags.heading_ancestors_text      = lv_ancestors_txt;
       _comp_obj_heading_.ptr.doc_object                   = cntr_;
       _comp_obj_heading_.ptr.html_segnames                = ((lev_markup_number == "4") ? html_segnames_ptr : 0);
@@ -5669,34 +5648,34 @@ template SiSUdocAbstraction() {
           writeln("* ", _node.to!string);
         }
       }
-      assert(_comp_obj_heading_.node.parent_lev_markup <= 7);
-      assert(_comp_obj_heading_.node.parent_ocn >= 0);
+      assert(_comp_obj_heading_.metainfo.parent_lev_markup <= 7);
+      assert(_comp_obj_heading_.metainfo.parent_ocn >= 0);
       if (lev_markup_number.match(rgx.levels_numbered_headings)) {
-        assert(_comp_obj_heading_.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);
+        assert(_comp_obj_heading_.metainfo.heading_lev_markup <= 7);
+        assert(_comp_obj_heading_.metainfo.ocn >= 0);
+        if (_comp_obj_heading_.metainfo.parent_lev_markup > 0) {
+          assert(_comp_obj_heading_.metainfo.parent_lev_markup < _comp_obj_heading_.metainfo.heading_lev_markup);
+          if (_comp_obj_heading_.metainfo.ocn != 0) {
+            assert(_comp_obj_heading_.metainfo.parent_ocn < _comp_obj_heading_.metainfo.ocn);
           }
         }
-        if (_comp_obj_heading_.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) {
+        if (_comp_obj_heading_.metainfo.heading_lev_markup == 0) {
+          assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_sect_A);
+        } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_sect_B) {
+          assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_sect_A);
+        } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_sect_C) {
+          assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_sect_B);
+        } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_sect_D) {
+          assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_sect_C);
+        } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_text_1) {
+          assert(_comp_obj_heading_.metainfo.parent_lev_markup <= DocStructMarkupHeading.h_sect_D);
+        } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_text_2) {
+          assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_text_1);
+        } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_text_3) {
+          assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_text_2);
+        } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_text_4) {
+          assert(_comp_obj_heading_.metainfo.parent_lev_markup == DocStructMarkupHeading.h_text_3);
+        } else if  (_comp_obj_heading_.metainfo.heading_lev_markup == DocStructMarkupHeading.h_text_5) {
         }
       }
       return _comp_obj_heading_;
diff --git a/src/sdp/meta/metadoc_summary.d b/src/sdp/meta/metadoc_summary.d
index 0c5e73d..f278f90 100644
--- a/src/sdp/meta/metadoc_summary.d
+++ b/src/sdp/meta/metadoc_summary.d
@@ -28,18 +28,18 @@ template SiSUabstractionSummary() {
       ];
       foreach (k; doc_matters.xml.keys_seq.seg) {
         foreach (obj; doc_abstraction[k]) {
-          if (obj.typeinfo.is_of_part != "empty") {
-            if (!empty(obj.node.object_number)) {
+          if (obj.metainfo.is_of_part != "empty") {
+            if (!empty(obj.metainfo.object_number)) {
               if (k == "body") {
-                check["last_object_number_body"] = obj.node.object_number;
+                check["last_object_number_body"] = obj.metainfo.object_number;
               }
-              if (!(obj.node.object_number.empty)) {
-                check["last_object_number"] = obj.node.object_number;
+              if (!(obj.metainfo.object_number.empty)) {
+                check["last_object_number"] = obj.metainfo.object_number;
               }
             }
             if (k == "bookindex_seg") {
-              if (obj.misc.object_number_type == 2) {
-                check["last_object_number_book_index"] = obj.misc.object_number_book_index;
+              if (obj.metainfo.object_number_type == 2) {
+                check["last_object_number_book_index"] = obj.metainfo.object_number_book_index;
               }
             }
           }
diff --git a/src/sdp/meta/object_setter.d b/src/sdp/meta/object_setter.d
index 77e44e0..a928ec8 100644
--- a/src/sdp/meta/object_setter.d
+++ b/src/sdp/meta/object_setter.d
@@ -6,7 +6,7 @@
 module sdp.meta.object_setter;
 template ObjectSetter() {
   /+ structs +/
-  struct DocObj_TypeInfo_ {                                   // typeinfo
+  struct DocObj_MetaInfo_ {                                   // metainfo
     string                 is_of_part                         = ""; // frontmatter, body, backmatter
     string                 is_of_section                      = ""; // toc, body, glossary, biography, book index, blurb
     string                 is_of_type                         = ""; // para, block ?
@@ -14,63 +14,7 @@ template ObjectSetter() {
     alias                  of_part                            = is_of_part;
     alias                  of_section                         = is_of_section;
     alias                  is_of                              = is_of_type;
-  }
-  struct DocObj_TxtAttrib_ {                                  // attrib
-    int                    indent_base                        = 0;
-    int                    indent_hang                        = 0;
-    bool                   bullet                             = false;
-    string                 language                           = ""; // not implemented, consider
-  }
-  struct DocObj_Has_ {                                        // has
-    bool                   inline_links                       = false;
-    bool                   inline_notes_reg                   = false;
-    bool                   inline_notes_star                  = false;
-    bool                   contains_image_without_dimensions  = false;
-  }
-  struct DocObj_Node_ {                                       // node
-    enum ONtype { none, substantive, non_substantive, glossary, bibliography, book_index, blurb, comment }
-    string[string][string] node;
-    int                    ocn                                = 0;
-    string object_number() const @property {
-      return (ocn==0)
-        ? ""
-        : ocn.to!string;
-    }
-    int                    o_n_type                           = 0;
-    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_ {                                      // table
-    int                    number_of_columns                  = 0;
-    double[]               column_widths                      = [];
-    string[]               column_aligns                      = [];
-    bool                   heading                            = false;
-    bool                   walls                              = false; // not implemented
-  }
-  struct DocObj_CodeBlock_ {                                  // code_block
-    string                 syntax                             = "";
-  }
-  struct DocObj_Pointer_ {                                    // ptr
-    int                    doc_object                         = 0;
-    int                    html_segnames                      = 0;
-    int                    heading                            = 0;
-  }
-  struct DocObj_Tags_ {                                       // tags
-    string[]               heading_ancestors_text             = [ "", "", "", "", "", "", "", "", ];
-    string                 segment_anchor_tag                 = "";
-    string                 segname_prev                       = "";
-    string                 segname_next                       = "";
-    string[]               lev4_subtoc                        = [];
-    string[]               anchor_tags                        = [];
-  }
-  struct DocObj_Misc_ {                                       // misc
+    /+ o_n +/
     int                    o_n_substantive                    = 0;
     int                    o_n_non_substantive                = 0;
     int                    o_n_glossary                       = 0;
@@ -109,19 +53,103 @@ template ObjectSetter() {
     }
     string                 object_number_off                  = "";
     bool                   visible_object_number              = false;
+    // enum ONtype { none, substantive, non_substantive, glossary, bibliography, book_index, blurb, comment }
     int                    object_number_type                 = 0; // { ocn, non, bkidx }
+    /+ node +/
+    string[string][string] node;
+    int                    ocn                                = 0;
+    string object_number() const @property {
+      return (ocn==0)
+        ? ""
+        : ocn.to!string;
+    }
+    int                    o_n_type                           = 0;
+    int                    heading_lev_markup                 = 9;
+    int                    heading_lev_collapsed              = 9;
+    string marked_up_level() const @property {
+      string _out;
+      switch (heading_lev_markup) {
+      case 0:
+        _out = "A";
+        break;
+      case 1:
+        _out = "B";
+        break;
+      case 2:
+        _out = "C";
+        break;
+      case 3:
+        _out = "D";
+        break;
+      case 4:
+        _out = "1";
+        break;
+      case 5:
+        _out = "2";
+        break;
+      case 6:
+        _out = "3";
+        break;
+      case 7:
+        _out = "4";
+        break;
+      default:
+        _out = "";
+        break;
+      }
+      return _out;
+    }
+    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_TxtAttrib_ {                                  // attrib
+    int                    indent_base                        = 0;
+    int                    indent_hang                        = 0;
+    bool                   bullet                             = false;
+    string                 language                           = ""; // not implemented, consider
+  }
+  struct DocObj_Has_ {                                        // has
+    bool                   inline_links                       = false;
+    bool                   inline_notes_reg                   = false;
+    bool                   inline_notes_star                  = false;
+    bool                   contains_image_without_dimensions  = false;
+  }
+  struct DocObj_Table_ {                                      // table
+    int                    number_of_columns                  = 0;
+    double[]               column_widths                      = [];
+    string[]               column_aligns                      = [];
+    bool                   heading                            = false;
+    bool                   walls                              = false; // not implemented
+  }
+  struct DocObj_CodeBlock_ {                                  // code_block
+    string                 syntax                             = "";
+  }
+  struct DocObj_Pointer_ {                                    // ptr
+    int                    doc_object                         = 0;
+    int                    html_segnames                      = 0;
+    int                    heading                            = 0;
+  }
+  struct DocObj_Tags_ {                                       // tags
+    string[]               heading_ancestors_text             = [ "", "", "", "", "", "", "", "", ];
+    string                 segment_anchor_tag                 = "";
+    string                 segname_prev                       = "";
+    string                 segname_next                       = "";
+    string[]               lev4_subtoc                        = [];
+    string[]               anchor_tags                        = [];
   }
   struct ObjGenericComposite {
     string                 text                               = "";
-    DocObj_TypeInfo_       typeinfo;
+    DocObj_MetaInfo_       metainfo;
     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;
   }
   struct TheObjects {
     ObjGenericComposite[] oca;
diff --git a/src/sdp/output/epub3.d b/src/sdp/output/epub3.d
index 74856e1..0e864f7 100644
--- a/src/sdp/output/epub3.d
+++ b/src/sdp/output/epub3.d
@@ -104,20 +104,20 @@ template outputEPub3() {
     debug(epubmanifest) {
       foreach (s; doc_matters.xml.keys_seq.seg) {
         foreach (obj; doc_abstraction[s]) {
-          if (obj.typeinfo.is_a == "heading") {
-            if (obj.node.heading_lev_markup == 4) {
+          if (obj.metainfo.is_a == "heading") {
+            if (obj.metainfo.heading_lev_markup == 4) {
               writefln(
                 "%s~ [%s.xhtml] %s",
                 obj.marked_up_level,
                 obj.tags.segment_anchor_tag,
                 obj.text
               );
-            } else if (obj.node.heading_lev_markup > 4) {
+            } else if (obj.metainfo.heading_lev_markup > 4) {
               writefln(
                 "%s~ [%s.xhtml#%s] %s",
                 obj.marked_up_level,
                 obj.tags.segment_anchor_tag,
-                obj.node.object_number,
+                obj.metainfo.object_number,
                 obj.text
               );
             }
@@ -146,27 +146,27 @@ template outputEPub3() {
     );
     foreach (sect; doc_matters.xml.keys_seq.seg) {
       foreach (obj; doc_abstraction[sect]) {
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           string _txt = obj.text.replaceAll(rgx.inline_notes_al_gen, "").strip;
           foreach_reverse (n; 0 .. 7) {
             string k = n.to!string;
-            switch (obj.node.dom_collapsed[n]) {
+            switch (obj.metainfo.dom_collapsed[n]) {
             case DomTags.close :
               toc ~= markup.indent_by_spaces_provided((n + 1), "  ") ~ "</li>" ~ "\n";
               toc ~= markup.indent_by_spaces_provided(n, "  ") ~ "</ol>" ~ "\n";
               break;
             case DomTags.close_and_open :
               toc ~= markup.indent_by_spaces_provided((n + 1), "  ") ~ "</li>" ~ "\n";
-              if  (obj.node.heading_lev_markup < 4) {
+              if  (obj.metainfo.heading_lev_markup < 4) {
                 toc ~= markup.indent_by_spaces_provided((n + 1), "  ") ~ "<li>" ~ "\n"
                 ~ markup.indent_by_spaces_provided((n + 2), "  ")
                 ~ "<a href=\"" ~ obj.tags.segment_anchor_tag ~ ".xhtml" ~ "\">"
                 ~ _txt
                 ~ "</a>" ~ "\n";
               } else {
-                string hashtag =(obj.node.heading_lev_markup == 4)
+                string hashtag =(obj.metainfo.heading_lev_markup == 4)
                 ? ""
-                : ("#" ~ obj.node.ocn.to!string);
+                : ("#" ~ obj.metainfo.ocn.to!string);
                 toc ~= markup.indent_by_spaces_provided((n + 1), "  ") ~ "<li>" ~ "\n"
                 ~ markup.indent_by_spaces_provided((n + 2), "  ")
                 ~ "<a href=\"" ~ obj.tags.segment_anchor_tag ~ ".xhtml" ~ hashtag ~ "\">"
@@ -176,16 +176,16 @@ template outputEPub3() {
               break;
             case DomTags.open :
               toc ~= markup.indent_by_spaces_provided(n, "  ") ~ "<ol>" ~ "\n";
-              if  (obj.node.heading_lev_markup < 4) {
+              if  (obj.metainfo.heading_lev_markup < 4) {
                 toc ~= markup.indent_by_spaces_provided((n + 1), "  ") ~ "<li>" ~ "\n"
                 ~ markup.indent_by_spaces_provided((n + 2), "  ")
                 ~ "<a href=\"" ~ obj.tags.segment_anchor_tag ~ ".xhtml" ~ "\">"
                 ~ _txt
                 ~ "</a>" ~ "\n";
               } else {
-                string hashtag =(obj.node.heading_lev_markup == 4)
+                string hashtag =(obj.metainfo.heading_lev_markup == 4)
                 ? ""
-                : ("#" ~ obj.node.ocn.to!string);
+                : ("#" ~ obj.metainfo.ocn.to!string);
                 toc ~= markup.indent_by_spaces_provided((n + 1), "  ") ~ "<li>" ~ "\n"
                 ~ markup.indent_by_spaces_provided((n + 2), "  ")
                 ~ "<a href=\"" ~ obj.tags.segment_anchor_tag ~ ".xhtml" ~ hashtag ~ "\">"
@@ -243,11 +243,11 @@ template outputEPub3() {
     );
     foreach (sect; doc_matters.xml.keys_seq.seg) {
       foreach (obj; doc_abstraction[sect]) {
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           string _txt = obj.text.replaceAll(rgx.inline_notes_al_gen, "").strip;
-          string hashtag =(obj.node.heading_lev_markup <= 4) ? "" : ("#" ~ obj.node.ocn.to!string);
+          string hashtag =(obj.metainfo.heading_lev_markup <= 4) ? "" : ("#" ~ obj.metainfo.ocn.to!string);
           foreach_reverse (k; 0 .. 7) {
-            switch (obj.node.dom_markedup[k]) {
+            switch (obj.metainfo.dom_markedup[k]) {
             case DomTags.close :
               toc ~= "\n    </navPoint>";
               break;
@@ -310,12 +310,12 @@ template outputEPub3() {
     foreach (part; doc_matters.xml.keys_seq.seg) {
       foreach (obj; doc_abstraction[part]) {
         string _txt = xhtml_format.special_characters(obj, obj.text);
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           assert(part == "head" || "toc_seg" || "body" || "endnotes" || "glossary" || "bibliography" || "bookindex_seg" || "blurb" || "tail");
-          switch (obj.node.heading_lev_markup) {
+          switch (obj.metainfo.heading_lev_markup) {
           case 0: .. case 3:
             /+ fill buffer, and replace with new levels from 1 to 3 +/
-            switch (obj.node.heading_lev_markup) {
+            switch (obj.metainfo.heading_lev_markup) {
             case 0:
               top_level_headings[0] = "";
               top_level_headings[1] = "";
@@ -357,23 +357,23 @@ template outputEPub3() {
             break;
           case 8: .. case 9:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a, ": ", obj.node.heading_lev_markup);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a, ": ", obj.metainfo.heading_lev_markup);
               writeln(__FILE__, ":", __LINE__, ": ", obj.text);
             }
             break;
           default:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a, ": ", obj.node.heading_lev_markup);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a, ": ", obj.metainfo.heading_lev_markup);
             }
             break;
           }
         } else {
           assert(part == "head" || "toc_seg" || "body" || "endnotes" || "glossary" || "bibliography" || "bookindex_seg" || "blurb" || "tail");
-          switch (obj.typeinfo.is_of_part) {
+          switch (obj.metainfo.is_of_part) {
           case "frontmatter":             assert(part == "head" || "toc_seg");
-            switch (obj.typeinfo.is_of_type) {
+            switch (obj.metainfo.is_of_type) {
             case "para":
-              switch (obj.typeinfo.is_a) {
+              switch (obj.metainfo.is_a) {
               case "toc":
                 auto t = xhtml_format.para_seg(obj, _txt, suffix, "epub");
                 doc_epub3[segment_filename] ~= t[0];
@@ -381,22 +381,22 @@ template outputEPub3() {
                 break;
               default:
                 if ((doc_matters.opt.action.debug_do)) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
                 }
                 break;
               }
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_type);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
               }
               break;
             }
             break;
           case "body":                    assert(part == "body");
-            switch (obj.typeinfo.is_of_type) {
+            switch (obj.metainfo.is_of_type) {
             case "para":
-              switch (obj.typeinfo.is_a) {
+              switch (obj.metainfo.is_a) {
               case "para":
                 auto t = xhtml_format.para_seg(obj, _txt, suffix, "epub");
                 doc_epub3[segment_filename] ~= t[0];
@@ -404,13 +404,13 @@ template outputEPub3() {
                 break;
               default:
                 if ((doc_matters.opt.action.debug_do)) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
                 }
                 break;
               }
               break;
             case "block":
-              switch (obj.typeinfo.is_a) {
+              switch (obj.metainfo.is_a) {
               case "quote":
                 auto t = xhtml_format.quote_seg(obj, _txt, suffix, "epub");
                 doc_epub3[segment_filename] ~= t[0].to!string;
@@ -442,23 +442,23 @@ template outputEPub3() {
                 break;
               default:
                 if ((doc_matters.opt.action.debug_do)) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
                 }
                 break;
               }
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_type);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
               }
               break;
             }
             break;
           case "backmatter":
             assert(part == "endnotes" || "glossary" || "bibliography" || "bookindex_seg" || "blurb" || "tail");
-            switch (obj.typeinfo.is_of_type) {
+            switch (obj.metainfo.is_of_type) {
             case "para":
-              switch (obj.typeinfo.is_a) {
+              switch (obj.metainfo.is_a) {
               case "endnote":             assert(part == "endnotes");
                 auto t = xhtml_format.para_seg(obj, _txt, suffix, "epub");
                 doc_epub3[segment_filename] ~= t[0];
@@ -485,14 +485,14 @@ template outputEPub3() {
                 break;
               default:
                 if ((doc_matters.opt.action.debug_do)) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
                 }
                 break;
               }
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_type);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
               }
               break;
             }
@@ -501,14 +501,14 @@ template outputEPub3() {
             break;
           default:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_part);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_part);
             }
             break;
           }
         }
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           assert(obj.text.length > 0);
-          if (obj.node.heading_lev_markup <= 4) {
+          if (obj.metainfo.heading_lev_markup <= 4) {
             oepbs_content_parts["manifest_documents"] ~=
               format(q"¶      <item id="%s.xhtml" href="%s.xhtml" media-type="application/xhtml+xml" />
   ¶",
@@ -526,28 +526,28 @@ template outputEPub3() {
               obj.tags.segment_anchor_tag,
               obj.tags.segment_anchor_tag,
             );
-          } else if (obj.node.heading_lev_markup > 4) {
+          } else if (obj.metainfo.heading_lev_markup > 4) {
             oepbs_content_parts["manifest_documents"] ~=
               format(q"¶      <item id="%s.xhtml#%s" href="%s.xhtml#%s" media-type="application/xhtml+xml" />
   ¶",
               obj.tags.segment_anchor_tag,
-              obj.node.object_number,
+              obj.metainfo.object_number,
               obj.tags.segment_anchor_tag,
-              obj.node.object_number,
+              obj.metainfo.object_number,
             );
             oepbs_content_parts["spine"] ~=
               format(q"¶    <itemref idref="%s.xhtml#%s" linear="yes" />
   ¶",
               obj.tags.segment_anchor_tag,
-              obj.node.object_number,
+              obj.metainfo.object_number,
             );
             oepbs_content_parts["guide"] ~=
               format(q"¶      <reference type="%s#%s" href="%s#%s" />
   ¶",
               obj.tags.segment_anchor_tag,
-              obj.node.object_number,
+              obj.metainfo.object_number,
               obj.tags.segment_anchor_tag,
-              obj.node.object_number,
+              obj.metainfo.object_number,
             );
           }
         }
diff --git a/src/sdp/output/html.d b/src/sdp/output/html.d
index d9992a8..46cd4ee 100644
--- a/src/sdp/output/html.d
+++ b/src/sdp/output/html.d
@@ -28,11 +28,11 @@ template outputHTML() {
       foreach (obj; doc_abstraction[part]) {
         delimit = xhtml_format.div_delimit(part, previous_part);
         string _txt = xhtml_format.special_characters(obj, obj.text);
-        switch (obj.typeinfo.is_of_part) {
+        switch (obj.metainfo.is_of_part) {
         case "frontmatter":              assert(part == "head" || "toc_scroll");
-          switch (obj.typeinfo.is_of_type) {
+          switch (obj.metainfo.is_of_type) {
           case "para":
-            switch (obj.typeinfo.is_a) {
+            switch (obj.metainfo.is_a) {
             case "heading":
               doc_html ~= delimit ~ xhtml_format.heading_scroll(obj, _txt, suffix);
               break;
@@ -41,22 +41,22 @@ template outputHTML() {
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
               }
               break;
             }
             break;
           default:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_type);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
             }
             break;
           }
           break;
         case "body":                     assert(part == "body" || "head"); // surprise
-          switch (obj.typeinfo.is_of_type) {
+          switch (obj.metainfo.is_of_type) {
           case "para":
-            switch (obj.typeinfo.is_a) {
+            switch (obj.metainfo.is_a) {
             case "heading":
               doc_html ~= delimit ~ xhtml_format.heading_scroll(obj, _txt, suffix);
               break;
@@ -65,13 +65,13 @@ template outputHTML() {
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
               }
               break;
             }
             break;
           case "block":
-            switch (obj.typeinfo.is_a) {
+            switch (obj.metainfo.is_a) {
             case "quote":
               doc_html ~= xhtml_format.quote_scroll(obj, _txt);
               break;
@@ -94,23 +94,23 @@ template outputHTML() {
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
               }
               break;
             }
             break;
           default:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_type);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
             }
             break;
           }
           break;
         case "backmatter":
           assert(part == "endnotes" || "glossary" || "bibliography" || "bookindex_scroll" || "blurb" || "tail");
-          switch (obj.typeinfo.is_of_type) {
+          switch (obj.metainfo.is_of_type) {
           case "para":
-            switch (obj.typeinfo.is_a) {
+            switch (obj.metainfo.is_a) {
             case "heading":
               doc_html ~= delimit ~ xhtml_format.heading_scroll(obj, _txt, suffix);
               break;
@@ -131,14 +131,14 @@ template outputHTML() {
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
               }
               break;
             }
             break;
           default:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_type);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
             }
             break;
           }
@@ -147,8 +147,8 @@ template outputHTML() {
           break;
         default:
           if ((doc_matters.opt.action.debug_do)) {
-            writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_part);
-            writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+            writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_part);
+            writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
             writeln(__FILE__, ":", __LINE__, ": ", obj.text);
           }
           break;
@@ -200,12 +200,12 @@ template outputHTML() {
       foreach (obj; doc_abstraction[part]) {
         delimit = xhtml_format.div_delimit(part, previous_part);
         string _txt = xhtml_format.special_characters(obj, obj.text);
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           assert(part == "head" || "toc_seg" || "body" || "endnotes" || "glossary" || "bibliography" || "bookindex_seg" || "blurb" || "tail");
-          switch (obj.node.heading_lev_markup) {
+          switch (obj.metainfo.heading_lev_markup) {
           case 0: .. case 3:
             /+ fill buffer, and replace with new levels from 1 to 3 +/
-            switch (obj.node.heading_lev_markup) {
+            switch (obj.metainfo.heading_lev_markup) {
             case 0:
               top_level_headings[0] = "";
               top_level_headings[1] = "";
@@ -226,7 +226,7 @@ template outputHTML() {
               goto default;
             default:
               auto t = xhtml_format.heading_seg(obj, _txt, suffix, "seg");
-              top_level_headings[obj.node.heading_lev_markup] = t[0];
+              top_level_headings[obj.metainfo.heading_lev_markup] = t[0];
               break;
             }
             break;
@@ -252,45 +252,45 @@ template outputHTML() {
             break;
           case 8: .. case 9:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a, ": ", obj.node.heading_lev_markup);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a, ": ", obj.metainfo.heading_lev_markup);
               writeln(__FILE__, ":", __LINE__, ": ", obj.text);
             }
             break;
           default:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a, ": ", obj.node.heading_lev_markup);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a, ": ", obj.metainfo.heading_lev_markup);
             }
             break;
           }
         } else {
           assert(part == "head" || "toc_seg" || "body" || "endnotes" || "glossary" || "bibliography" || "bookindex_seg" || "blurb" || "tail");
-          switch (obj.typeinfo.is_of_part) {
+          switch (obj.metainfo.is_of_part) {
           case "frontmatter":             assert(part == "head" || "toc_seg");
-            switch (obj.typeinfo.is_of_type) {
+            switch (obj.metainfo.is_of_type) {
             case "para":
-              switch (obj.typeinfo.is_a) {
+              switch (obj.metainfo.is_a) {
               case "toc":
                 auto t = xhtml_format.para_seg(obj, _txt, suffix, "seg");
                 doc_html[segment_filename] ~= t[0].to!string;
                 break;
               default:
                 if ((doc_matters.opt.action.debug_do)) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
                 }
                 break;
               }
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
               }
               break;
             }
             break;
           case "body":                    assert(part == "body");
-            switch (obj.typeinfo.is_of_type) {
+            switch (obj.metainfo.is_of_type) {
             case "para":
-              switch (obj.typeinfo.is_a) {
+              switch (obj.metainfo.is_a) {
               case "para":
                 auto t = xhtml_format.para_seg(obj, _txt, suffix, "seg");
                 doc_html[segment_filename] ~= t[0].to!string;
@@ -298,13 +298,13 @@ template outputHTML() {
                 break;
               default:
                 if ((doc_matters.opt.action.debug_do)) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
                 }
                 break;
               }
               break;
             case "block":
-              switch (obj.typeinfo.is_a) {
+              switch (obj.metainfo.is_a) {
               case "quote":
                 auto t = xhtml_format.quote_seg(obj, _txt, suffix, "seg");
                 doc_html[segment_filename] ~= t[0].to!string;
@@ -336,23 +336,23 @@ template outputHTML() {
                 break;
               default:
                 if ((doc_matters.opt.action.debug_do)) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
                 }
                 break;
               }
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_type);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
               }
               break;
             }
             break;
           case "backmatter":
             assert(part == "endnotes" || "glossary" || "bibliography" || "bookindex_seg" || "blurb" || "tail");
-            switch (obj.typeinfo.is_of_type) {
+            switch (obj.metainfo.is_of_type) {
             case "para":
-              switch (obj.typeinfo.is_a) {
+              switch (obj.metainfo.is_a) {
               case "endnote":             assert(part == "endnotes");
                 auto t = xhtml_format.para_seg(obj, _txt, suffix, "seg");
                 doc_html[segment_filename] ~= t[0];
@@ -379,14 +379,14 @@ template outputHTML() {
                 break;
               default:
                 if ((doc_matters.opt.action.debug_do)) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
                 }
                 break;
               }
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_type);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
               }
               break;
             }
@@ -395,7 +395,7 @@ template outputHTML() {
             break;
           default:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_part);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_part);
             }
             break;
           }
diff --git a/src/sdp/output/sqlite.d b/src/sdp/output/sqlite.d
index b4be286..1aa578d 100644
--- a/src/sdp/output/sqlite.d
+++ b/src/sdp/output/sqlite.d
@@ -246,7 +246,7 @@ template SQLiteFormatAndLoadObject() {
         string o = format(q"¶<p class="%s"><b>
             %s
           </b></p>¶",
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             _txt,
           );
         return o;
@@ -259,7 +259,7 @@ template SQLiteFormatAndLoadObject() {
         string o = format(q"¶<p class="%s" indent="h%si%s">
           %s
         </p>¶",
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             obj.attrib.indent_hang,
             obj.attrib.indent_base,
             _txt
@@ -273,7 +273,7 @@ template SQLiteFormatAndLoadObject() {
         string o = format(q"¶<p class="%s">
           %s
         </p>¶",
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             _txt
           );
         return o;
@@ -285,7 +285,7 @@ template SQLiteFormatAndLoadObject() {
         string o = format(q"¶<p class="%s">
           %s
         </p>¶",
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             _txt
           );
         return o;
@@ -296,7 +296,7 @@ template SQLiteFormatAndLoadObject() {
         string _txt = munge_html(obj);
         string o = format(q"¶
         <p class="%s">%s</p>¶",
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             _txt.stripRight
           );
         return o;
@@ -306,7 +306,7 @@ template SQLiteFormatAndLoadObject() {
       ) {
         string _txt = munge_html(obj);
         string o = format(q"¶<p class="%s">%s</p>¶",
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             _txt
           );
         return o;
@@ -316,7 +316,7 @@ template SQLiteFormatAndLoadObject() {
       ) {
         string _txt = html_special_characters_code(obj.text);
         string o = format(q"¶<p class="%s">%s</p>¶",
-            obj.typeinfo.is_a,
+            obj.metainfo.is_a,
             _txt
           );
         return o;
@@ -375,7 +375,7 @@ template SQLiteFormatAndLoadObject() {
           </table>
           %s
         </p>¶",
-          obj.typeinfo.is_a,
+          obj.metainfo.is_a,
           _txt,
           _note
         );
@@ -888,12 +888,12 @@ template SQLiteInsertDocObjectsLoop() {
         );
       ¶",
         _metadata_tid,
-        obj.node.ocn,
+        obj.metainfo.ocn,
         SQLinsertDelimiter!()(obj_txt["text"]),
         SQLinsertDelimiter!()(obj_txt["html"]),
-        obj.node.heading_lev_markup,
-        obj.typeinfo.is_of_type,
-        obj.typeinfo.is_a,
+        obj.metainfo.heading_lev_markup,
+        obj.metainfo.is_of_type,
+        obj.metainfo.is_a,
       );
       return _insert_doc_objects_row;
     }
@@ -903,32 +903,32 @@ template SQLiteInsertDocObjectsLoop() {
     string[] _insert_doc_objects;
     foreach (part; doc_matters.xml.keys_seq.sql) {
       foreach (obj; doc_abstraction[part]) {
-        switch (obj.typeinfo.is_of_part) {
+        switch (obj.metainfo.is_of_part) {
         case "frontmatter":              assert(part == "head", part);
-          switch (obj.typeinfo.is_of_type) {
+          switch (obj.metainfo.is_of_type) {
           case "para":
-            switch (obj.typeinfo.is_a) {
+            switch (obj.metainfo.is_a) {
             case "heading":
               obj_txt = format_and_sqlite_load.heading(obj);
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
               }
               break;
             }
             break;
           default:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_type);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
             }
             break;
           }
           break;
         case "body": //                    assert(part == "body", part); // TODO broken
-          switch (obj.typeinfo.is_of_type) {
+          switch (obj.metainfo.is_of_type) {
           case "para":
-            switch (obj.typeinfo.is_a) {
+            switch (obj.metainfo.is_a) {
             case "heading":
               debug (asserts) { // TODO consider and fix or remove
                 if (part != "body") {
@@ -942,13 +942,13 @@ template SQLiteInsertDocObjectsLoop() {
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
               }
               break;
             }
             break;
           case "block":
-            switch (obj.typeinfo.is_a) {
+            switch (obj.metainfo.is_a) {
             case "quote":
               obj_txt = format_and_sqlite_load.quote(obj);
               break;
@@ -971,23 +971,23 @@ template SQLiteInsertDocObjectsLoop() {
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
               }
               break;
             }
             break;
           default:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_type);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
             }
             break;
           }
           break;
         case "backmatter":
           assert(part == "glossary" || "bibliography" || "bookindex_seg" || "blurb" || "tail", part);
-          switch (obj.typeinfo.is_of_type) {
+          switch (obj.metainfo.is_of_type) {
           case "para":
-            switch (obj.typeinfo.is_a) {
+            switch (obj.metainfo.is_a) {
             case "heading":
               obj_txt = format_and_sqlite_load.heading(obj);
               break;
@@ -1005,14 +1005,14 @@ template SQLiteInsertDocObjectsLoop() {
               break;
             default:
               if ((doc_matters.opt.action.debug_do)) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
               }
               break;
             }
             break;
           default:
             if ((doc_matters.opt.action.debug_do)) {
-              writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_type);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
             }
             break;
           }
@@ -1021,28 +1021,28 @@ template SQLiteInsertDocObjectsLoop() {
           break;
         default:
           if ((doc_matters.opt.action.debug_do)) {
-            writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_of_part); // check where empty value could come from
-            writeln(__FILE__, ":", __LINE__, ": ", obj.typeinfo.is_a);
+            writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_part); // check where empty value could come from
+            writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
             writeln(__FILE__, ":", __LINE__, ": ", obj.text); // check where empty value could come from
           }
           break;
         }
-        if (obj.typeinfo.is_a == "heading") {
+        if (obj.metainfo.is_a == "heading") {
           if ((doc_matters.opt.action.verbose)) {
             writeln(
-              "markup: ", obj.node.heading_lev_markup,
-              "> ", obj.node.dom_markedup,
-              "; collapsed: ", obj.node.heading_lev_collapsed,
-              "> ", obj.node.dom_collapsed,
-              "; ocn: ", obj.node.ocn,
-              " node: ", obj.node.node,
-              "; parent: ", obj.node.parent_lev_markup,
-              "; ocn: ", obj.node.parent_ocn,
+              "markup: ", obj.metainfo.heading_lev_markup,
+              "> ", obj.metainfo.dom_markedup,
+              "; collapsed: ", obj.metainfo.heading_lev_collapsed,
+              "> ", obj.metainfo.dom_collapsed,
+              "; ocn: ", obj.metainfo.ocn,
+              " node: ", obj.metainfo.node,
+              "; parent: ", obj.metainfo.parent_lev_markup,
+              "; ocn: ", obj.metainfo.parent_ocn,
               "; ",
             );
           }
         }
-        if (!(obj.typeinfo.is_a == "comment")) {
+        if (!(obj.metainfo.is_a == "comment")) {
           _insert_doc_objects ~= insertDocObjectsRow(obj);
         }
       } // loop closes
diff --git a/src/sdp/output/xmls.d b/src/sdp/output/xmls.d
index e5d27c9..e977e6c 100644
--- a/src/sdp/output/xmls.d
+++ b/src/sdp/output/xmls.d
@@ -60,7 +60,7 @@ template outputXHTMLs() {
         .replaceAll(rgx.xhtml_less_than,    "&#60;")
         .replaceAll(rgx.xhtml_greater_than, "&#62;")
         .replaceAll(rgx.nbsp_char,          " ");
-      if (!(obj.typeinfo.is_a == "code")) {
+      if (!(obj.metainfo.is_a == "code")) {
         _txt = (_txt)
           .replaceAll(rgx.xhtml_line_break,   "<br />");
       }
@@ -363,7 +363,7 @@ template outputXHTMLs() {
           writeln(__LINE__,
             " (missed) markup link identified (",
             obj.has.inline_links,
-            "): ", obj.typeinfo.is_a, ": ",
+            "): ", obj.metainfo.is_a, ": ",
             obj.text
           );
         }
@@ -373,7 +373,7 @@ template outputXHTMLs() {
           writeln(__LINE__,
             " (missed) markup link identified (",
             obj.has.inline_links,
-            "): ", obj.typeinfo.is_a, ": ",
+            "): ", obj.metainfo.is_a, ": ",
             obj.text
           );
         }
@@ -393,12 +393,12 @@ template outputXHTMLs() {
       }
       debug(markup_endnotes) {
         if (_txt.match(rgx.inline_notes_delimiter_al_regular_number_note)) {
-          writeln(__LINE__, " (missed) markup endnote: ", obj.typeinfo.is_a, ": ", obj.text);
+          writeln(__LINE__, " (missed) markup endnote: ", obj.metainfo.is_a, ": ", obj.text);
         }
       }
       debug(markup) {
         if (_txt.match(rgx.inline_notes_delimiter_al_regular_number_note)) {
-          writeln(__LINE__, " (missed) markup endnote: ", obj.typeinfo.is_a, ": ", obj.text);
+          writeln(__LINE__, " (missed) markup endnote: ", obj.metainfo.is_a, ": ", obj.text);
         }
       }
       return _txt;
@@ -433,7 +433,7 @@ template outputXHTMLs() {
         );
       } else if (_txt.match(rgx.inline_notes_delimiter_al_regular_number_note)) {
         debug(markup) {
-          writeln(__LINE__, " endnote: ", obj.typeinfo.is_a, ": ", obj.text);
+          writeln(__LINE__, " endnote: ", obj.metainfo.is_a, ": ", obj.text);
         }
       }
       auto t = tuple(
@@ -574,12 +574,12 @@ template outputXHTMLs() {
       auto tags = _xhtml_anchor_tags(obj.tags.anchor_tags);
       string _horizontal_rule = "<hr />";
       if ((_xml_type != "html")
-      || (obj.node.heading_lev_markup == 0 || obj.node.heading_lev_markup > 4)) {
+      || (obj.metainfo.heading_lev_markup == 0 || obj.metainfo.heading_lev_markup > 4)) {
         _horizontal_rule = "";
       }
       _txt = font_face(_txt);
       string o;
-      if (obj.node.object_number.empty) {
+      if (obj.metainfo.object_number.empty) {
         o = format(q"¶%s
       <div class="substance">
         <h%s class="%s">%s
@@ -587,11 +587,11 @@ template outputXHTMLs() {
         </h%s>
       </div>¶",
           _horizontal_rule,
-          obj.node.heading_lev_markup,
-          obj.typeinfo.is_a,
+          obj.metainfo.heading_lev_markup,
+          obj.metainfo.is_a,
           tags,
           _txt,
-          obj.node.heading_lev_markup,
+          obj.metainfo.heading_lev_markup,
         );
       } else {
         o = format(q"¶%s
@@ -602,15 +602,15 @@ template outputXHTMLs() {
         </h%s>
       </div>¶",
         _horizontal_rule,
-        obj.node.object_number,
-        obj.node.object_number,
-        obj.node.heading_lev_markup,
-        obj.typeinfo.is_a,
-        obj.node.object_number,
-        obj.node.object_number,
+        obj.metainfo.object_number,
+        obj.metainfo.object_number,
+        obj.metainfo.heading_lev_markup,
+        obj.metainfo.is_a,
+        obj.metainfo.object_number,
+        obj.metainfo.object_number,
         tags,
         _txt,
-        obj.node.heading_lev_markup,
+        obj.metainfo.heading_lev_markup,
         );
       }
       return o;
@@ -649,13 +649,13 @@ template outputXHTMLs() {
       _txt = font_face(_txt);
       string o;
       _txt = (obj.attrib.bullet) ? ("●&#160;&#160;" ~ _txt) : _txt;
-      if (obj.node.object_number.empty) {
+      if (obj.metainfo.object_number.empty) {
         o = format(q"¶  <div class="substance">
       <p class="%s" indent="h%si%s">%s
         %s
       </p>
     </div>¶",
-          obj.typeinfo.is_a,
+          obj.metainfo.is_a,
           obj.attrib.indent_hang,
           obj.attrib.indent_base,
           tags,
@@ -668,12 +668,12 @@ template outputXHTMLs() {
         %s
       </p>
     </div>¶",
-          obj.node.object_number,
-          obj.node.object_number,
-          obj.typeinfo.is_a,
+          obj.metainfo.object_number,
+          obj.metainfo.object_number,
+          obj.metainfo.is_a,
           obj.attrib.indent_hang,
           obj.attrib.indent_base,
-          obj.node.object_number,
+          obj.metainfo.object_number,
           tags,
           _txt
         );
@@ -712,13 +712,13 @@ template outputXHTMLs() {
     ) {
       _txt = font_face(_txt);
       string o;
-      if (obj.node.object_number.empty) {
+      if (obj.metainfo.object_number.empty) {
         o = format(q"¶  <div class="substance">
       <p class="%s">
         %s
       </p>
     </div>¶",
-          obj.typeinfo.is_a,
+          obj.metainfo.is_a,
           _txt
         );
       } else {
@@ -728,10 +728,10 @@ template outputXHTMLs() {
         %s
       </p>
     </div>¶",
-          obj.node.object_number,
-          obj.node.object_number,
-          obj.typeinfo.is_a,
-          obj.node.object_number,
+          obj.metainfo.object_number,
+          obj.metainfo.object_number,
+          obj.metainfo.is_a,
+          obj.metainfo.object_number,
           _txt
         );
       }
@@ -769,13 +769,13 @@ template outputXHTMLs() {
     ) {
       _txt = font_face(_txt);
       string o;
-      if (obj.node.object_number.empty) {
+      if (obj.metainfo.object_number.empty) {
         o = format(q"¶  <div class="substance">
       <p class="%s">
         %s
       </p>
     </div>¶",
-          obj.typeinfo.is_a,
+          obj.metainfo.is_a,
           _txt
         );
       } else {
@@ -785,10 +785,10 @@ template outputXHTMLs() {
         %s
       </p>
     </div>¶",
-          obj.node.object_number,
-          obj.node.object_number,
-          obj.typeinfo.is_a,
-          obj.node.object_number,
+          obj.metainfo.object_number,
+          obj.metainfo.object_number,
+          obj.metainfo.is_a,
+          obj.metainfo.object_number,
           _txt
         );
       }
@@ -827,11 +827,11 @@ template outputXHTMLs() {
     ) {
       _txt = font_face(_txt);
       string o;
-      if (obj.node.object_number.empty) {
+      if (obj.metainfo.object_number.empty) {
         o = format(q"¶  <div class="substance">
       <p class="%s">%s</p>
     </div>¶",
-          obj.typeinfo.is_a,
+          obj.metainfo.is_a,
           _txt.stripRight
         );
       } else {
@@ -839,10 +839,10 @@ template outputXHTMLs() {
       <label class="ocn"><a href="#%s" class="lnkocn">%s</a></label>
       <p class="%s" id="%s">%s</p>
     </div>¶",
-          obj.node.object_number,
-          obj.node.object_number,
-          obj.typeinfo.is_a,
-          obj.node.object_number,
+          obj.metainfo.object_number,
+          obj.metainfo.object_number,
+          obj.metainfo.is_a,
+          obj.metainfo.object_number,
           _txt.stripRight
         );
       }
@@ -881,11 +881,11 @@ template outputXHTMLs() {
     ) {
       _txt = font_face(_txt);
       string o;
-      if (obj.node.object_number.empty) {
+      if (obj.metainfo.object_number.empty) {
           o = format(q"¶  <div class="substance">
             <p class="%s">%s</p>
         </div>¶",
-          obj.typeinfo.is_a,
+          obj.metainfo.is_a,
           _txt
         );
       } else {
@@ -893,10 +893,10 @@ template outputXHTMLs() {
           <label class="ocn"><a href="#%s" class="lnkocn">%s</a></label>
           <p class="%s" id="%s">%s</p>
         </div>¶",
-          obj.node.object_number,
-          obj.node.object_number,
-          obj.typeinfo.is_a,
-          obj.node.object_number,
+          obj.metainfo.object_number,
+          obj.metainfo.object_number,
+          obj.metainfo.is_a,
+          obj.metainfo.object_number,
           _txt
         );
       }
@@ -981,10 +981,10 @@ template outputXHTMLs() {
         %s
       </p>
     </div>¶",
-        obj.node.object_number,
-        obj.node.object_number,
-        obj.typeinfo.is_a,
-        obj.node.object_number,
+        obj.metainfo.object_number,
+        obj.metainfo.object_number,
+        obj.metainfo.is_a,
+        obj.metainfo.object_number,
         tags,
         _txt,
         _note
@@ -999,7 +999,7 @@ template outputXHTMLs() {
       o = format(q"¶    <p class="%s" indent="h%si%s">
       %s
     </p>¶",
-        obj.typeinfo.is_a,
+        obj.metainfo.is_a,
         obj.attrib.indent_hang,
         obj.attrib.indent_base,
         _txt
@@ -1011,11 +1011,11 @@ template outputXHTMLs() {
       string                   _txt,
     ) {
       string o;
-      if (obj.node.object_number.empty) {
+      if (obj.metainfo.object_number.empty) {
           o = format(q"¶  <div class="substance">
         <p class="%s">%s</p>
     </div>¶",
-          obj.typeinfo.is_a,
+          obj.metainfo.is_a,
           _txt
         );
       } else {
@@ -1023,10 +1023,10 @@ template outputXHTMLs() {
       <label class="ocn"><a href="#%s" class="lnkocn">%s</a></label>
       <p class="%s" id="%s">%s</p>
     </div>¶",
-          obj.node.object_number,
-          obj.node.object_number,
-          obj.typeinfo.is_a,
-          obj.node.object_number,
+          obj.metainfo.object_number,
+          obj.metainfo.object_number,
+          obj.metainfo.is_a,
+          obj.metainfo.object_number,
           _txt
         );
       }