From f6d28b62f0e02b8a88a1832589e203c7a613f45b Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph.amissah@gmail.com>
Date: Fri, 25 Nov 2022 22:06:40 -0500
Subject: regex review, match speed & compile time, ctregex

- improve match time
  - add interim fontface identifier marker

- improve compile time
  - remove unused regexs
  - separate out some specialized output matches
---
 src/doc_reform/io_in/paths_source.d          |  38 ++--
 src/doc_reform/io_in/read_config_files.d     |  20 ++-
 src/doc_reform/io_in/read_source_files.d     |  24 +--
 src/doc_reform/io_out/epub3.d                |  15 +-
 src/doc_reform/io_out/html.d                 |  13 +-
 src/doc_reform/io_out/hub.d                  |   4 -
 src/doc_reform/io_out/latex.d                |  29 +--
 src/doc_reform/io_out/odt.d                  |  23 ++-
 src/doc_reform/io_out/package.d              |   3 +-
 src/doc_reform/io_out/paths_output.d         |  21 +--
 src/doc_reform/io_out/rgx.d                  |  38 ++--
 src/doc_reform/io_out/rgx_latex.d            |  68 ++++++++
 src/doc_reform/io_out/rgx_xhtml.d            |  63 +++++++
 src/doc_reform/io_out/source_pod.d           |  10 +-
 src/doc_reform/io_out/sqlite.d               |  39 +++--
 src/doc_reform/io_out/xmls.d                 |  15 +-
 src/doc_reform/meta/conf_make_meta_structs.d |   3 +
 src/doc_reform/meta/conf_make_meta_yaml.d    | 252 ++++++++++++++-------------
 src/doc_reform/meta/metadoc.d                |  53 +++++-
 src/doc_reform/meta/metadoc_from_src.d       |  27 +--
 src/doc_reform/meta/package.d                |   3 +-
 src/doc_reform/meta/rgx.d                    |  10 +-
 src/doc_reform/meta/rgx_files.d              |  72 ++++++++
 src/doc_reform/meta/rgx_yaml_tags.d          |  62 +++++++
 src/doc_reform/spine.d                       |  36 ++--
 25 files changed, 637 insertions(+), 304 deletions(-)
 create mode 100644 src/doc_reform/io_out/rgx_latex.d
 create mode 100644 src/doc_reform/io_out/rgx_xhtml.d
 create mode 100644 src/doc_reform/meta/rgx_files.d
 create mode 100644 src/doc_reform/meta/rgx_yaml_tags.d

(limited to 'src/doc_reform')

diff --git a/src/doc_reform/io_in/paths_source.d b/src/doc_reform/io_in/paths_source.d
index c34ac43..24f12b9 100644
--- a/src/doc_reform/io_in/paths_source.d
+++ b/src/doc_reform/io_in/paths_source.d
@@ -63,10 +63,10 @@ import
   std.conv : to;
 import
   doc_reform.meta.defaults,
-  doc_reform.meta.rgx;
+  doc_reform.meta.rgx_files;
 template PodManifest() {
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
+  mixin spineRgxFiles;
+  static auto rgx_files = RgxFiles();
   @safe auto PodManifest(O)(
     O       _opt_action,
     string  _pth=""
@@ -81,12 +81,12 @@ template PodManifest() {
         && (exists(_pth.chainPath(pod_manifest_filename).array) != 0
         && (_pth.chainPath(pod_manifest_filename).array).isFile)) {
           _manifest_path = _pth;
-        } else if (_pth.match(rgx.src_pth_contents)
+        } else if (_pth.match(rgx_files.src_pth_contents)
         && exists(_pth) != 0 && _pth.isFile) {
           _manifest_path = _pth.dirName;
-        } else if (_pth.match(rgx.src_pth_pod_sst_or_ssm)
+        } else if (_pth.match(rgx_files.src_pth_pod_sst_or_ssm)
         && exists(_pth) != 0 && (_pth.isFile)) {
-          if (auto m = _pth.match(rgx.src_pth_pod_sst_or_ssm)) {
+          if (auto m = _pth.match(rgx_files.src_pth_pod_sst_or_ssm)) {
             _manifest_path = m.captures["podpath"];
           }
         } else  {
@@ -118,9 +118,9 @@ template PodManifest() {
   }
 }
 template PathMatters() {
-  mixin spineRgxIn;
   mixin InternalMarkup;
-  static auto rgx  = RgxI();
+  mixin spineRgxFiles;
+  static auto rgx_files = RgxFiles();
   static auto mkup = InlineMarkup();
   @safe auto PathMatters(O,E)(
     O        _opt_action,
@@ -193,7 +193,7 @@ template PathMatters() {
             string[] _lngs;
             foreach (filename_; manifest_list_of_filenames) {
               string _k = "en";
-              if (auto m = (filename_).match(rgx.language_code_and_filename)) {
+              if (auto m = (filename_).match(rgx_files.language_code_and_filename)) {
                 _k = m.captures[1].to!string;
               }
               _lngs ~= _k; // all the languages from the manifest list of filenames with paths
@@ -230,11 +230,11 @@ template PathMatters() {
             return filename.stripExtension;
           }
           @safe string filename_extension() {
-            return filename.match(rgx.src_pth_sst_or_ssm).captures["extension"];
+            return filename.match(rgx_files.src_pth_sst_or_ssm).captures["extension"];
           }
           @safe string lng() {
             string _k;
-            if (auto m = path_and_fn.match(rgx.language_code_and_filename)) {
+            if (auto m = path_and_fn.match(rgx_files.language_code_and_filename)) {
               _k = m.captures[1];
             } else {_k = "en"; }
             return _k;
@@ -318,7 +318,7 @@ template PathMatters() {
             } else {
               _dir = ((path_and_fn.chainPath("../../../")).asNormalizedPath).array;
               assert(_dir == absolute_path_to_src
-                .match(rgx.src_base_parent_dir_name).captures["dir"]);
+                .match(rgx_files.src_base_parent_dir_name).captures["dir"]);
             }
             if (_opt_action.debug_do) {
               writeln("--> (base_dir)  ", _dir);
@@ -341,7 +341,7 @@ template PathMatters() {
             string _dir;
             if (
               auto m = (absolute_path_to_src)
-              .match(rgx.src_formalised_file_path_parts)
+              .match(rgx_files.src_formalised_file_path_parts)
             ) {
               _dir = ((m.captures["pth"]).asNormalizedPath).array;
             } else if (
@@ -396,7 +396,7 @@ template PathMatters() {
             ) {
               _dir = m.captures["dir"];
             } else {
-              _dir = (absolute_path_to_src).match(rgx.src_base_parent_dir_name).captures["dir"];
+              _dir = (absolute_path_to_src).match(rgx_files.src_base_parent_dir_name).captures["dir"];
             }
             if (_opt_action.debug_do) {
               writeln("--> (base_parent_dir) ", _dir);
@@ -460,8 +460,6 @@ template PathMatters() {
   }
 }
 template configFilePaths() {
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
   @safe auto configFilePaths(M,E)(
     M      _manifested,
     E      _env,
@@ -581,8 +579,8 @@ template configFilePaths() {
   }
 }
 template spinePathsSRC() {
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
+  mixin spineRgxFiles;
+  static auto rgx_files = RgxFiles();
   @safe auto spinePathsSRC(D,Fn)(
     D   _pwd,
     Fn  _fn_src_and_path,
@@ -594,7 +592,7 @@ template spinePathsSRC() {
       @safe string language() {
         // use command line info as well?
         string _k;
-        if (auto m = _fn_src_and_path.match(rgx.language_code_and_filename)) {
+        if (auto m = _fn_src_and_path.match(rgx_files.language_code_and_filename)) {
           _k = m.captures[1];
         } else { /+ unknown until doc_meta read, (could provide & use command line info?) +/
           _k = "xx"; // original default was "en" but is not known
@@ -632,8 +630,6 @@ template spinePathsSRC() {
 
 
 template spinePathsPods() {
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
   string _suffix = ".zip";
   auto spinePathsPods(M)(M doc_matters) {
     string _base_dir_pod = (doc_matters.output_path.length > 0)
diff --git a/src/doc_reform/io_in/read_config_files.d b/src/doc_reform/io_in/read_config_files.d
index 64d548b..a1aa425 100644
--- a/src/doc_reform/io_in/read_config_files.d
+++ b/src/doc_reform/io_in/read_config_files.d
@@ -56,9 +56,11 @@
 module doc_reform.io_in.read_config_files;
 import
   std.file,
-  std.path,
+  std.path;
+import
   doc_reform.meta,
   doc_reform.io_in.paths_source,
+  doc_reform.meta.rgx_files,
   doc_reform.meta.rgx;
 
 template readConfigSite() {
@@ -191,13 +193,17 @@ webserv:
 static template readConfigDoc() {
   import
     std.file,
-    std.path,
+    std.path;
+  import
     doc_reform.meta,
     doc_reform.io_in.paths_source,
+    doc_reform.meta.rgx_files,
     doc_reform.meta.rgx;
   @system final auto readConfigDoc(M,E)(M _manifested, E _env) {
     mixin spineRgxIn;
     static auto rgx = RgxI();
+    mixin spineRgxFiles;
+    static auto rgx_files = RgxFiles();
     string config_file_str;
     string conf_filename = "NONE";
     auto _conf_file_details = configFilePaths!()(_manifested, _env);
@@ -243,9 +249,12 @@ static template readConfigDoc() {
 static template configReadSiteYAML() {
   import
     std.file,
-    std.path,
+    std.path;
+  import
     doc_reform.meta,
-    doc_reform.io_in.paths_source;
+    doc_reform.io_in.paths_source,
+    doc_reform.meta.rgx_files,
+    doc_reform.meta.rgx;
   @safe final YAMLDocument configReadSiteYAML(M,E)(M _manifested, E _env) {
     string _configuration = configReadInSiteYAML!()(_manifested, _env);
     auto _conf_file_details = configFilePaths!()(_manifested, _env);
@@ -257,7 +266,8 @@ static template configReadSiteYAML() {
 static template configReadDocYAML() {
   import
     std.file,
-    std.path,
+    std.path;
+  import
     doc_reform.meta,
     doc_reform.io_in.paths_source;
   @safe final YAMLDocument configReadDocYAML(M,E)(M _manifested, E _env) {
diff --git a/src/doc_reform/io_in/read_source_files.d b/src/doc_reform/io_in/read_source_files.d
index 4c8cf77..0a187f8 100644
--- a/src/doc_reform/io_in/read_source_files.d
+++ b/src/doc_reform/io_in/read_source_files.d
@@ -57,12 +57,16 @@ module doc_reform.io_in.read_source_files;
 template spineRawMarkupContent() {
   import
     std.file,
-    std.path,
+    std.path;
+  import
     doc_reform.meta,
     doc_reform.io_in.paths_source,
+    doc_reform.meta.rgx_files,
     doc_reform.meta.rgx;
   mixin spineRgxIn;
   static auto rgx = RgxI();
+  mixin spineRgxFiles;
+  static auto rgx_files = RgxFiles();
   string[] _images=[];
   @safe string[] _extract_images(S)(S content_block) {
     string[] images_;
@@ -108,7 +112,7 @@ template spineRawMarkupContent() {
         = raw.markupSourceHeaderContentRawLineTupleArray(source_txt_str);
       char[] header_raw = t.header;
       char[][] sourcefile_body_content = t.src_txt;
-      if (fn_src.match(rgx.src_fn_master)) { // filename with path needed if master file (.ssm) not otherwise
+      if (fn_src.match(rgx_files.src_fn_master)) { // filename with path needed if master file (.ssm) not otherwise
         auto ins = Inserts();
         ContentsInsertsImages tu
           = ins.scan_master_src_for_insert_files_and_import_content(_opt_action, sourcefile_body_content, fn_src);
@@ -175,9 +179,9 @@ template spineRawMarkupContent() {
       return source_line_arr;
     }
     @safe string markupSourceReadIn(in string fn_src) {
-      static auto rgx = RgxI();
+      static auto rgx_files = RgxFiles();
       enforce(
-        fn_src.match(rgx.src_pth_sst_or_ssm),
+        fn_src.match(rgx_files.src_pth_sst_or_ssm),
         "not a dr markup filename: «" ~
         fn_src ~ "»"
       );
@@ -226,7 +230,7 @@ template spineRawMarkupContent() {
       char[][] contents_insert;
       int code_block_status     = 0;
       enum codeBlock { off, curly, tic, }
-      auto fn_pth_full = fn_src.match(rgx.src_pth_sst_or_ssm);
+      auto fn_pth_full = fn_src.match(rgx_files.src_pth_sst_or_ssm);
       auto markup_src_file_path = fn_pth_full.captures[1];
       foreach (line; markup_sourcefile_insert_content) {
         if (code_block_status == codeBlock.curly) {
@@ -245,14 +249,14 @@ template spineRawMarkupContent() {
         } else if (line.matchFirst(rgx.block_tic_code_open)) {
           code_block_status   = codeBlock.tic;
           contents_insert ~= line;
-        } else if (auto m = line.match(rgx.insert_src_fn_ssi_or_sst)) {
+        } else if (auto m = line.match(rgx_files.insert_src_fn_ssi_or_sst)) {
           auto insert_fn = m.captures[2];
           auto insert_sub_pth = m.captures[1];
           auto fn_src_insert
             = chainPath(markup_src_file_path, insert_sub_pth ~ insert_fn).array;
           auto raw = MarkupRawUnit();
           auto markup_sourcesubfile_insert_content
-            = raw.getInsertMarkupSourceContentRawLineArray(fn_src_insert, rgx.src_fn_find_inserts);
+            = raw.getInsertMarkupSourceContentRawLineArray(fn_src_insert, rgx_files.src_fn_find_inserts);
           debug(insert_file) {
             writeln(line);
             writeln(fn_src_insert);
@@ -300,7 +304,7 @@ template spineRawMarkupContent() {
       char[][] contents;
       int code_block_status     = 0;
       enum codeBlock { off, curly, tic, }
-      auto fn_pth_full = fn_src.match(rgx.src_pth_sst_or_ssm);
+      auto fn_pth_full = fn_src.match(rgx_files.src_pth_sst_or_ssm);
       auto markup_src_file_path = fn_pth_full.captures[1];
       char[][] contents_insert;
       string[] _images          =[];
@@ -322,7 +326,7 @@ template spineRawMarkupContent() {
         } else if (line.matchFirst(rgx.block_tic_code_open)) {
           code_block_status = codeBlock.tic;
           contents ~= line;
-        } else if (auto m = line.match(rgx.insert_src_fn_ssi_or_sst)) {
+        } else if (auto m = line.match(rgx_files.insert_src_fn_ssi_or_sst)) {
           auto insert_fn      = m.captures[2];
           auto insert_sub_pth = m.captures[1];
           auto fn_src_insert
@@ -331,7 +335,7 @@ template spineRawMarkupContent() {
           auto raw = MarkupRawUnit();
           /+ TODO +/
           auto markup_sourcefile_insert_content
-            = raw.getInsertMarkupSourceContentRawLineArray(fn_src_insert, rgx.src_fn_find_inserts);
+            = raw.getInsertMarkupSourceContentRawLineArray(fn_src_insert, rgx_files.src_fn_find_inserts);
           debug(insert_file) {
             writeln(line);
             writeln(fn_src_insert);
diff --git a/src/doc_reform/io_out/epub3.d b/src/doc_reform/io_out/epub3.d
index d19545c..41d6d9d 100644
--- a/src/doc_reform/io_out/epub3.d
+++ b/src/doc_reform/io_out/epub3.d
@@ -58,18 +58,21 @@ template outputEPub3() {
     std.conv : to;
   import
     doc_reform.io_out,
+    doc_reform.io_out.rgx,
+    doc_reform.io_out.rgx_xhtml,
     doc_reform.io_out.create_zip_file,
     doc_reform.io_out.xmls,
     doc_reform.io_out.xmls_css;
   mixin InternalMarkup;
   mixin outputXHTMLs;
   static auto rgx = RgxO();
+  static auto rgx_xhtml = RgxXHTML();
   @safe string special_characters_text(string _txt) {
     _txt = _txt
-      .replaceAll(rgx.xhtml_ampersand,    "&amp;")  // "&#38;"
-      .replaceAll(rgx.xhtml_quotation,    "&quot;") // "&#34;"
-      .replaceAll(rgx.xhtml_less_than,    "&lt;")   // "&#60;"
-      .replaceAll(rgx.xhtml_greater_than, "&gt;")   // "&#62;"
+      .replaceAll(rgx_xhtml.ampersand,    "&amp;")  // "&#38;"
+      .replaceAll(rgx_xhtml.quotation,    "&quot;") // "&#34;"
+      .replaceAll(rgx_xhtml.less_than,    "&lt;")   // "&#60;"
+      .replaceAll(rgx_xhtml.greater_than, "&gt;")   // "&#62;"
       .replaceAll(rgx.br_line,            "<br />")
       .replaceAll(rgx.br_line_inline,     "<br />")
       .replaceAll(rgx.br_line_spaced,     "<br />\n<br />")
@@ -184,6 +187,7 @@ template outputEPub3() {
     enum DomTags { none, open, close, close_and_open, open_still, }
     auto markup = InlineMarkup();
     static auto rgx = RgxO();
+    static auto rgx_xhtml = RgxXHTML();
     string toc;
     bool _new_title_set = false;
     string toc_head = format(q"┃<html xmlns="https://www.w3.org/1999/xhtml"
@@ -297,8 +301,10 @@ template outputEPub3() {
           I    doc_matters,
   ) {
     mixin spineRgxOut;
+    mixin spineRgxXHTML;
     auto xhtml_format = outputXHTMLs();
     static auto rgx = RgxO();
+    static auto rgx_xhtml = RgxXHTML();
     string[] doc;
     string segment_filename;
     string[] top_level_headings = ["","","",""];
@@ -607,6 +613,7 @@ template outputEPub3() {
       static assert(is(typeof(epub_write.oebps_content_opf)      == string));
     }
     static auto rgx = RgxO();
+    static auto rgx_xhtml = RgxXHTML();
     auto pth_epub3 = spinePathsEPUB!()(doc_matters.output_path, doc_matters.src.language);
     auto xhtml_format = outputXHTMLs();
     /+ zip file +/
diff --git a/src/doc_reform/io_out/html.d b/src/doc_reform/io_out/html.d
index 26636ba..dd50252 100644
--- a/src/doc_reform/io_out/html.d
+++ b/src/doc_reform/io_out/html.d
@@ -57,6 +57,9 @@ template outputHTML() {
     std.conv : to;
   import
     doc_reform.io_out,
+    doc_reform.io_out.rgx,
+    doc_reform.meta.rgx_files,
+    doc_reform.io_out.rgx_xhtml,
     doc_reform.io_out.create_zip_file,
     doc_reform.io_out.xmls,
     doc_reform.io_out.xmls_css;
@@ -66,8 +69,10 @@ template outputHTML() {
                  M    doc_matters,
   ) {
     mixin spineRgxOut;
+    mixin spineRgxXHTML;
     auto xhtml_format = outputXHTMLs();
     static auto rgx = RgxO();
+    static auto rgx_xhtml = RgxXHTML();
     string[] doc_html;
     string[] doc;
     string suffix = ".html";
@@ -257,7 +262,9 @@ template outputHTML() {
           M    doc_matters,
   ) {
     mixin spineRgxOut;
+    mixin spineRgxXHTML;
     static auto rgx = RgxO();
+    static auto rgx_xhtml = RgxXHTML();
     auto xhtml_format = outputXHTMLs();
     string[][string] doc_html;
     string[][string] doc_html_endnotes;
@@ -508,11 +515,11 @@ template outputHTML() {
     debug(asserts) {
       static assert(is(typeof(doc_html)      == string[][string]));
     }
-    mixin spineRgxOut;
-    static auto rgx = RgxO();
+    mixin spineRgxFiles;
+    static auto rgx_files = RgxFiles();
     auto pth_html = spinePathsHTML!()(doc_matters.output_path, doc_matters.src.language);
     auto xhtml_format = outputXHTMLs();
-    auto m = doc_matters.src.filename.matchFirst(rgx.src_fn);
+    auto m = doc_matters.src.filename.matchFirst(rgx_files.src_fn);
     try {
       if (!exists(pth_html.seg(doc_matters.src.filename))) {
         pth_html.seg(doc_matters.src.filename).mkdirRecurse;
diff --git a/src/doc_reform/io_out/hub.d b/src/doc_reform/io_out/hub.d
index 4c5254b..c53055d 100644
--- a/src/doc_reform/io_out/hub.d
+++ b/src/doc_reform/io_out/hub.d
@@ -63,10 +63,8 @@ template outputHub() {
     const D doc_abstraction,
     I doc_matters
   ) {
-    mixin spineRgxOut;
     mixin Msg;
     auto msg = Msg!()(doc_matters);
-    static auto rgx = RgxO();
     enum outTask { source_or_pod, sqlite, sqlite_multi, latex, odt, epub, html_scroll, html_seg, html_stuff }
     void Scheduled(D,I)(int sched, D doc_abstraction, I doc_matters) {
       auto msg = Msg!()(doc_matters);
@@ -201,8 +199,6 @@ template outputHubOp() {
     doc_reform.io_out.create_zip_file,
     doc_reform.io_out.paths_output;
   @system void outputHubOp(E,O,C)(E env, O opt_action, C config) {
-    mixin spineRgxOut;
-    static auto rgx = RgxO();
     if ((opt_action.sqlite_db_drop)) {
       if ((opt_action.vox_gt1)) {
         writeln("sqlite drop db...");
diff --git a/src/doc_reform/io_out/latex.d b/src/doc_reform/io_out/latex.d
index 992887d..f7dee74 100644
--- a/src/doc_reform/io_out/latex.d
+++ b/src/doc_reform/io_out/latex.d
@@ -325,10 +325,14 @@ template outputLaTeX() {
     std.outbuffer,
     std.uri,
     std.conv : to;
-  import doc_reform.io_out;
-  mixin InternalMarkup; // watch
+  import
+    doc_reform.io_out,
+    doc_reform.io_out.rgx,
+    doc_reform.io_out.rgx_latex;
   mixin spineRgxOut;
   static auto rgx = RgxO();
+  mixin spineRgxLSC;
+  static auto rgx_sc = RgxLSC();
   mixin spineLanguageCodes;
   auto lang = Lang();
   auto paper = paperLaTeX;
@@ -337,23 +341,23 @@ template outputLaTeX() {
   ) {
     string _unescape_sp_char_esc()(string _txt) {
       _txt = _txt
-        .replaceAll(rgx.latex_special_char_escaped,
+        .replaceAll(rgx_sc.latex_special_char_escaped,
           format(q"┃%s┃", "$1"))
-        .replaceAll(rgx.latex_special_char_escaped_braced,
+        .replaceAll(rgx_sc.latex_special_char_escaped_braced,
           format(q"┃%s┃", "$1"));
       return _txt;
     }
     string _unescape_fontface_esc()(string _txt) {
-      _txt = _txt.replaceAll(rgx.latex_identify_inline_fontface,
+      _txt = _txt.replaceAll(rgx_sc.latex_identify_inline_fontface,
            format(q"┃%s%s┃", "$1", "$2"));
       return _txt;
     }
-    _txt = replaceAll!(m => "\\" ~ m[1])(_txt, rgx.latex_special_char_for_escape);
-    _txt = replaceAll!(m => "{\\" ~ m[1] ~ "}")(_txt, rgx.latex_special_char_for_escape_and_braces);
+    _txt = replaceAll!(m => "\\" ~ m[1])(_txt, rgx_sc.latex_special_char_for_escape);
+    _txt = replaceAll!(m => "{\\" ~ m[1] ~ "}")(_txt, rgx_sc.latex_special_char_for_escape_and_braces);
     _txt = replaceAll!(m => "''")(_txt, rgx.quotes_open_and_close);
     _txt = replaceAll!(m => "$\\cdot$")(_txt, rgx.middle_dot);
-    _txt = replaceAll!(m => _unescape_sp_char_esc(m[0]))(_txt, rgx.latex_identify_inline_link);
-    _txt = replaceAll!(m => _unescape_fontface_esc(m[0]))(_txt, rgx.latex_identify_inline_fontface);
+    _txt = replaceAll!(m => _unescape_sp_char_esc(m[0]))(_txt, rgx_sc.latex_identify_inline_link);
+    _txt = replaceAll!(m => _unescape_fontface_esc(m[0]))(_txt, rgx_sc.latex_identify_inline_fontface);
     return _txt;
   }
   @safe string sp_char_esc(O)(
@@ -461,8 +465,8 @@ template outputLaTeX() {
       }
       string _check_link(string _link) {
         _link = _link
-          .replaceFirst(rgx.latex_clean_internal_link, "")
-          .replaceAll(rgx.latex_special_char_for_escape_url, "\\$1");
+          .replaceFirst(rgx_sc.latex_clean_internal_link, "")
+          .replaceAll(rgx_sc.latex_special_char_for_escape_url, "\\$1");
         return _link;
       }
       if  (obj.metainfo.is_a != "code") {
@@ -529,7 +533,7 @@ template outputLaTeX() {
       string _tex_para;
       _tex_para = q"┃%s┃";
       _txt  = format(_tex_para,
-        _txt.replaceAll(rgx.latex_clean_bookindex_linebreak, "\n") ~ "\n\\brln\n"
+        _txt.replaceAll(rgx_sc.latex_clean_bookindex_linebreak, "\n") ~ "\n\\brln\n"
       );
     }
     return _txt;
@@ -1381,7 +1385,6 @@ template outputLaTeX() {
 }
 template outputLaTeXstyInit() {
   import doc_reform.io_out;
-  mixin spineRgxOut;
   auto paper = paperLaTeX;
   void writeOutputLaTeXstyStatic(
     string latex_sty,
diff --git a/src/doc_reform/io_out/odt.d b/src/doc_reform/io_out/odt.d
index c5fb469..1cde2d4 100644
--- a/src/doc_reform/io_out/odt.d
+++ b/src/doc_reform/io_out/odt.d
@@ -50,7 +50,10 @@
 +/
 module doc_reform.io_out.odt;
 template formatODT() {
-  import doc_reform.io_out;
+  import
+    doc_reform.io_out,
+    doc_reform.io_out.rgx,
+    doc_reform.io_out.rgx_xhtml;
   import
     std.digest.sha,
     std.file,
@@ -63,8 +66,10 @@ template formatODT() {
     doc_reform.io_out.xmls,
     doc_reform.io_out.xmls_css;
   mixin spineRgxOut;
+  mixin spineRgxXHTML;
   struct formatODT {
     static auto rgx = RgxO();
+    static auto rgx_xhtml = RgxXHTML();
     @safe string _tags(O)(const O obj) {
       string _tags = "";
       if (obj.tags.anchor_tags.length > 0) {
@@ -107,6 +112,7 @@ template formatODT() {
     }
     @safe string _footnotes()(string _txt) {
       static auto rgx = RgxO();
+      static auto rgx_xhtml = RgxXHTML();
       _txt = _txt.replaceAll(
         rgx.inline_notes_al_regular_number_note,
         format(q"┃<text:note text:id="ftn%s" text:note-class="footnote">
@@ -274,10 +280,10 @@ template formatODT() {
     }
     @safe string _special_characters(O)(string _txt, const O obj) {
       _txt = _txt
-        .replaceAll(rgx.xhtml_ampersand,    "&amp;")
-        .replaceAll(rgx.xhtml_quotation,    "&#34;")
-        .replaceAll(rgx.xhtml_less_than,    "&lt;")
-        .replaceAll(rgx.xhtml_greater_than, "&gt;")
+        .replaceAll(rgx_xhtml.ampersand,    "&amp;")
+        .replaceAll(rgx_xhtml.quotation,    "&#34;")
+        .replaceAll(rgx_xhtml.less_than,    "&lt;")
+        .replaceAll(rgx_xhtml.greater_than, "&gt;")
         .replaceAll(rgx.nbsp_char,          "&#160;");
       return _txt;
     }
@@ -640,7 +646,10 @@ template formatODT() {
   }
 }
 template outputODT() {
-  import doc_reform.io_out;
+  import
+    doc_reform.io_out,
+    doc_reform.io_out.rgx,
+    doc_reform.io_out.rgx_xhtml;
   import
     std.digest.sha,
     std.file,
@@ -654,7 +663,9 @@ template outputODT() {
     doc_reform.io_out.xmls_css;
   mixin InternalMarkup;
   mixin spineRgxOut;
+  mixin spineRgxXHTML;
   static auto rgx = RgxO();
+  static auto rgx_xhtml = RgxXHTML();
   // mixin outputXmlODT;
   @safe string odt_head(I)(I doc_matters) {
     string _has_tables = format(q"┃
diff --git a/src/doc_reform/io_out/package.d b/src/doc_reform/io_out/package.d
index b6932ea..0a75f98 100644
--- a/src/doc_reform/io_out/package.d
+++ b/src/doc_reform/io_out/package.d
@@ -67,5 +67,4 @@ public import
   doc_reform.share.defaults,
   doc_reform.io_in.paths_source,
   doc_reform.io_out.defaults,
-  doc_reform.io_out.paths_output,
-  doc_reform.io_out.rgx;
+  doc_reform.io_out.paths_output;
diff --git a/src/doc_reform/io_out/paths_output.d b/src/doc_reform/io_out/paths_output.d
index fc31711..471c966 100644
--- a/src/doc_reform/io_out/paths_output.d
+++ b/src/doc_reform/io_out/paths_output.d
@@ -57,7 +57,8 @@ import
   std.path,
   std.regex,
   std.stdio;
-import doc_reform.meta.rgx;
+import
+  doc_reform.meta.rgx_files;
 template spineOutPaths() {
   auto spineOutPaths()(
     string output_pth_root,
@@ -149,8 +150,6 @@ template spineOutPathsFnPd() {
 }
 
 template spineDocRootTreeHTML() {
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
   auto spineDocRootTreeHTML()(string lng) {
     auto lng_pth = spineOutPaths!()("", lng);
     string base_dir = "html";
@@ -209,8 +208,6 @@ template spineDocRootTreeHTML() {
   }
 }
 template spinePathsHTML() {
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
   auto spinePathsHTML()(
     string output_path_root,
     string lng,
@@ -270,8 +267,6 @@ template spinePathsHTML() {
 }
 template spineUrlsHTML() {
   import std.format;
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
   auto spineUrlsHTML()(
     string url_doc_root,
     string lng,
@@ -371,8 +366,6 @@ template spineUrlsHTML() {
   }
 }
 template spinePathsEPUB() {
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
   auto spinePathsEPUB()(
     string output_pth_root,
     string lng,
@@ -477,8 +470,6 @@ template spinePathsEPUB() {
 }
 template spinePathsODT() {
   import std.conv;
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
   auto spinePathsODT(M)(
     M  doc_matters,
   ) {
@@ -541,8 +532,6 @@ template spinePathsODT() {
   }
 }
 template spinePathsPDF() {
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
   auto spinePathsPDF(M)(
     M  doc_matters,
   ) {
@@ -565,8 +554,6 @@ template spinePathsPDF() {
   }
 }
 template spinePathsLaTeX() {
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
   auto spinePathsLaTeX(M)(
     M  doc_matters,
   ) {
@@ -636,8 +623,6 @@ template spinePathsLaTeXsty() {
   }
 }
 template spinePathsSQLiteDiscrete() {
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
   auto spinePathsSQLiteDiscrete()(
     string output_pth_root,
     string lng,
@@ -662,8 +647,6 @@ template spinePathsSQLiteDiscrete() {
   }
 }
 template spinePathsSQLite() {
-  mixin spineRgxIn;
-  static auto rgx = RgxI();
   auto spinePathsSQLite()(
     string db_name,
     string output_pth_root,
diff --git a/src/doc_reform/io_out/rgx.d b/src/doc_reform/io_out/rgx.d
index 8369735..943643c 100644
--- a/src/doc_reform/io_out/rgx.d
+++ b/src/doc_reform/io_out/rgx.d
@@ -68,8 +68,7 @@ static template spineRgxOut() {
     static src_pth_contents                         = ctRegex!(`^(?P<path>[/]?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9][a-zA-Z0-9._-]*)/pod[.]manifest$`);
     static src_pth_zip                              = ctRegex!(`^(?P<path>[/]?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9._-]+[.]zip)$`);
     static src_pth_types                            = ctRegex!(`^(?P<path>[/]?[a-zA-Z0-9._-]+/)*(?P<gotfile>(?P<filename>[a-zA-Z0-9._-]+[.]ss[tm])|(?P<filelist>[a-zA-Z0-9._-]+/pod[.]manifest)|(?P<filezip>[a-zA-Z0-9._-]+[.]zip))$`);
-    static src_fn                                   =
-      ctRegex!(`^([/]?(?:[a-zA-Z0-9._-]+/)*)(?P<fn_src>(?P<fn_base>[a-zA-Z0-9._-]+)[.](?P<fn_src_suffix>ss[tm]))$`);
+    static src_fn                                   = ctRegex!(`^([/]?(?:[a-zA-Z0-9._-]+/)*)(?P<fn_src>(?P<fn_base>[a-zA-Z0-9._-]+)[.](?P<fn_src_suffix>ss[tm]))$`);
     static src_fn_master                            = ctRegex!(`^(?P<path>/?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9._-]+[.]ssm)$`);
     static src_fn_find_inserts                      = ctRegex!(`^(?P<path>/?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9._-]+[.]ss[im])$`);
     static insert_src_fn_ssi_or_sst                 = ctRegex!(`^<<\s*(?P<path>[a-zA-Z0-9._-]+/)*(?P<filename>[a-zA-Z0-9._-]+[.]ss[ti])$`);
@@ -119,34 +118,19 @@ static template spineRgxOut() {
     static mark_internal_site_lnk                   = ctRegex!(`¤`, "mg");
     static quotation_mark_sql_insert_delimiter      = ctRegex!("[']", "mg");
     /+ inline markup font face mod +/
-    static inline_emphasis                          = ctRegex!(`[*]┨(?P<text>.+?)┣[*]`, "mg");
-    static inline_bold                              = ctRegex!(`[!]┨(?P<text>.+?)┣[!]`, "mg");
-    static inline_underscore                        = ctRegex!(`[_]┨(?P<text>.+?)┣[_]`, "mg");
-    static inline_italics                           = ctRegex!(`[/]┨(?P<text>.+?)┣[/]`, "mg");
-    static inline_superscript                       = ctRegex!(`\^┨(?P<text>.+?)┣\^`, "mg");
-    static inline_subscript                         = ctRegex!(`[,]┨(?P<text>.+?)┣[,]`, "mg");
-    static inline_strike                            = ctRegex!(`[-]┨(?P<text>.+?)┣[-]`, "mg");
-    static inline_insert                            = ctRegex!(`[+]┨(?P<text>.+?)┣[+]`, "mg");
-    static inline_mono                              = ctRegex!(`[■]┨(?P<text>.+?)┣[■]`, "mg");
-    static inline_cite                              = ctRegex!(`[‖]┨(?P<text>.+?)┣[‖]`, "mg");
+    static inline_emphasis                          = ctRegex!(`⑆[*]┨(?P<text>.+?)┣[*]`, "mg");
+    static inline_bold                              = ctRegex!(`⑆[!]┨(?P<text>.+?)┣[!]`, "mg");
+    static inline_underscore                        = ctRegex!(`⑆[_]┨(?P<text>.+?)┣[_]`, "mg");
+    static inline_italics                           = ctRegex!(`⑆[/]┨(?P<text>.+?)┣[/]`, "mg");
+    static inline_superscript                       = ctRegex!(`⑆\^┨(?P<text>.+?)┣\^`, "mg");
+    static inline_subscript                         = ctRegex!(`⑆[,]┨(?P<text>.+?)┣[,]`, "mg");
+    static inline_strike                            = ctRegex!(`⑆[-]┨(?P<text>.+?)┣[-]`, "mg");
+    static inline_insert                            = ctRegex!(`⑆[+]┨(?P<text>.+?)┣[+]`, "mg");
+    static inline_mono                              = ctRegex!(`⑆[■]┨(?P<text>.+?)┣[■]`, "mg");
+    static inline_cite                              = ctRegex!(`⑆[‖]┨(?P<text>.+?)┣[‖]`, "mg");
     /+ table delimiters +/
     static table_delimiter_col                      = ctRegex!("[ ]*[┊][ ]*", "mg");
     static table_delimiter_row                      = ctRegex!("[ ]*\n", "mg");
-    static xhtml_ampersand                          = ctRegex!(`[&]`, "m");      // &amp;
-    static xhtml_quotation                          = ctRegex!(`["]`, "m");      // &quot;
-    static xhtml_less_than                          = ctRegex!(`[<]`, "m");      // &lt;
-    static xhtml_greater_than                       = ctRegex!(`[>]`, "m");      // &gt;
-    static xhtml_line_break                         = ctRegex!(` [\\]{2}`, "m"); // <br />
-    static latex_special_char                       = ctRegex!(`([%${}_#&\\])`);
-    static latex_special_char_for_escape            = ctRegex!(`([%${}_#\\])`);
-    static latex_special_char_for_escape_and_braces = ctRegex!(`([&])`);
-    static latex_special_char_for_escape_url        = ctRegex!(`([%])`);
-    static latex_special_char_escaped               = ctRegex!(`\\([%${}_#\\])`);
-    static latex_special_char_escaped_braced        = ctRegex!(`[{]\\([&])[}]`);
-    static latex_identify_inline_link               = ctRegex!(`┥.+?┝┤\S+?├`, "mg");
-    static latex_identify_inline_fontface           = ctRegex!(`\\([_#$]┨.+?┣)\\([_#$])`, "mg");
-    static latex_clean_internal_link                = ctRegex!(`^(?:#|¤\S+?#)`, "m");
-    static latex_clean_bookindex_linebreak          = ctRegex!(`\s*\\\\\\\\\s*`, "m");
     /+ paragraph operators +/
     static grouped_para_indent_1                    = ctRegex!(`^_1[ ]`, "m");
     static grouped_para_indent_2                    = ctRegex!(`^_2[ ]`, "m");
diff --git a/src/doc_reform/io_out/rgx_latex.d b/src/doc_reform/io_out/rgx_latex.d
new file mode 100644
index 0000000..25b9c60
--- /dev/null
+++ b/src/doc_reform/io_out/rgx_latex.d
@@ -0,0 +1,68 @@
+/+
+- Name: Spine, Doc Reform [a part of]
+  - Description: documents, structuring, processing, publishing, search
+    - static content generator
+
+  - Author: Ralph Amissah
+    [ralph.amissah@gmail.com]
+
+  - Copyright: (C) 2015 - 2022 Ralph Amissah, All Rights
+    Reserved.
+
+  - License: AGPL 3 or later:
+
+    Spine (SiSU), a framework for document structuring, publishing and
+    search
+
+    Copyright (C) Ralph Amissah
+
+    This program is free software: you can redistribute it and/or modify it
+    under the terms of the GNU AFERO General Public License as published by the
+    Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    This program is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+    more details.
+
+    You should have received a copy of the GNU General Public License along with
+    this program. If not, see [https://www.gnu.org/licenses/].
+
+    If you have Internet connection, the latest version of the AGPL should be
+    available at these locations:
+    [https://www.fsf.org/licensing/licenses/agpl.html]
+    [https://www.gnu.org/licenses/agpl.html]
+
+  - Spine (by Doc Reform, related to SiSU) uses standard:
+    - docReform markup syntax
+      - standard SiSU markup syntax with modified headers and minor modifications
+    - docReform object numbering
+      - standard SiSU object citation numbering & system
+
+  - Homepages:
+    [https://www.doc_reform.org]
+    [https://www.sisudoc.org]
+
+  - Git
+    [https://git.sisudoc.org/projects/?p=software/spine.git;a=summary]
+
++/
+/++
+  regex: regular expressions used in sisu document parser
++/
+module doc_reform.io_out.rgx_latex;
+static template spineRgxLSC() {
+  static struct RgxLSC {
+    static latex_special_char                       = ctRegex!(`([%${}_#&\\])`);
+    static latex_special_char_for_escape            = ctRegex!(`([%${}_#\\])`);
+    static latex_special_char_for_escape_and_braces = ctRegex!(`([&])`);
+    static latex_special_char_for_escape_url        = ctRegex!(`([%])`);
+    static latex_special_char_escaped               = ctRegex!(`\\([%${}_#\\])`);
+    static latex_special_char_escaped_braced        = ctRegex!(`[{]\\([&])[}]`);
+    static latex_identify_inline_link               = ctRegex!(`┥.+?┝┤\S+?├`, "mg");
+    static latex_identify_inline_fontface           = ctRegex!(`\\([_#$]┨.+?┣)\\([_#$])`, "mg");
+    static latex_clean_internal_link                = ctRegex!(`^(?:#|¤\S+?#)`, "m");
+    static latex_clean_bookindex_linebreak          = ctRegex!(`\s*\\\\\\\\\s*`, "m");
+  }
+}
diff --git a/src/doc_reform/io_out/rgx_xhtml.d b/src/doc_reform/io_out/rgx_xhtml.d
new file mode 100644
index 0000000..2d9aab1
--- /dev/null
+++ b/src/doc_reform/io_out/rgx_xhtml.d
@@ -0,0 +1,63 @@
+/+
+- Name: Spine, Doc Reform [a part of]
+  - Description: documents, structuring, processing, publishing, search
+    - static content generator
+
+  - Author: Ralph Amissah
+    [ralph.amissah@gmail.com]
+
+  - Copyright: (C) 2015 - 2022 Ralph Amissah, All Rights
+    Reserved.
+
+  - License: AGPL 3 or later:
+
+    Spine (SiSU), a framework for document structuring, publishing and
+    search
+
+    Copyright (C) Ralph Amissah
+
+    This program is free software: you can redistribute it and/or modify it
+    under the terms of the GNU AFERO General Public License as published by the
+    Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    This program is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+    more details.
+
+    You should have received a copy of the GNU General Public License along with
+    this program. If not, see [https://www.gnu.org/licenses/].
+
+    If you have Internet connection, the latest version of the AGPL should be
+    available at these locations:
+    [https://www.fsf.org/licensing/licenses/agpl.html]
+    [https://www.gnu.org/licenses/agpl.html]
+
+  - Spine (by Doc Reform, related to SiSU) uses standard:
+    - docReform markup syntax
+      - standard SiSU markup syntax with modified headers and minor modifications
+    - docReform object numbering
+      - standard SiSU object citation numbering & system
+
+  - Homepages:
+    [https://www.doc_reform.org]
+    [https://www.sisudoc.org]
+
+  - Git
+    [https://git.sisudoc.org/projects/?p=software/spine.git;a=summary]
+
++/
+/++
+  regex: regular expressions used in sisu document parser
++/
+module doc_reform.io_out.rgx_xhtml;
+static template spineRgxXHTML() {
+  static struct RgxXHTML {
+    static ampersand                                = ctRegex!(`[&]`, "m");      // &amp;
+    static quotation                                = ctRegex!(`["]`, "m");      // &quot;
+    static less_than                                = ctRegex!(`[<]`, "m");      // &lt;
+    static greater_than                             = ctRegex!(`[>]`, "m");      // &gt;
+    static line_break                               = ctRegex!(` [\\]{2}`, "m"); // <br />
+  }
+}
diff --git a/src/doc_reform/io_out/source_pod.d b/src/doc_reform/io_out/source_pod.d
index 14d63d7..0f9aef7 100644
--- a/src/doc_reform/io_out/source_pod.d
+++ b/src/doc_reform/io_out/source_pod.d
@@ -50,7 +50,9 @@
 +/
 module doc_reform.io_out.source_pod;
 template spinePod() {
-  import doc_reform.io_out;
+  import
+    doc_reform.meta.rgx_files,
+    doc_reform.io_out;
   import
     std.digest.sha,
     std.file,
@@ -64,15 +66,15 @@ template spinePod() {
     debug(asserts) {
       // static assert(is(typeof(doc_matters) == tuple));
     }
-    mixin spineRgxOut;
+    mixin spineRgxFiles;
     string pwd = doc_matters.env.pwd;
     auto src_path_info = doc_matters.src_path_info;
     auto pth_dr_doc_src = doc_matters.src_path_info;
     auto pths_pod = spinePathsPods!()(doc_matters);
     mixin spineLanguageCodes;
     auto lang = Lang();
-    static auto rgx = RgxO();
-    assert (doc_matters.src.filename.match(rgx.src_fn));
+    static auto rgx_files = RgxFiles();
+    assert (doc_matters.src.filename.match(rgx_files.src_fn));
     @system auto pod_archive(Z)(
       string _source_type,
       string _data_in,
diff --git a/src/doc_reform/io_out/sqlite.d b/src/doc_reform/io_out/sqlite.d
index a546998..33c25fe 100644
--- a/src/doc_reform/io_out/sqlite.d
+++ b/src/doc_reform/io_out/sqlite.d
@@ -49,7 +49,10 @@
 
 +/
 module doc_reform.io_out.sqlite;
-import doc_reform.io_out;
+import
+  doc_reform.io_out,
+  doc_reform.io_out.rgx,
+  doc_reform.io_out.rgx_xhtml;
 import
   std.file,
   std.uri;
@@ -57,8 +60,10 @@ import std.conv : to;
 import std.typecons : Nullable;
 import d2sqlite3;
 mixin spineRgxOut;
+mixin spineRgxXHTML;
 mixin InternalMarkup;
 static auto rgx = RgxO();
+static auto rgx_xhtml = RgxXHTML();
 static auto mkup = InlineMarkup();
 long _metadata_tid_lastrowid;
 template SQLiteHubBuildTablesAndPopulate() {
@@ -193,6 +198,7 @@ template SQLiteFormatAndLoadObject() {
     M    doc_matters,
   ) {
     mixin spineRgxOut;
+    mixin spineRgxXHTML;
     struct sqlite_format_and_load_objects {
       string generic_munge_sanitize_text_for_search(
         string _txt,
@@ -235,15 +241,15 @@ template SQLiteFormatAndLoadObject() {
       ) {
         string _html_special_characters(string _txt){
           _txt = _txt
-            .replaceAll(rgx.xhtml_ampersand,    "&#38;")
-            .replaceAll(rgx.xhtml_quotation,    "&#34;")
-            .replaceAll(rgx.xhtml_less_than,    "&#60;")
-            .replaceAll(rgx.xhtml_greater_than, "&#62;")
+            .replaceAll(rgx_xhtml.ampersand,    "&#38;")
+            .replaceAll(rgx_xhtml.quotation,    "&#34;")
+            .replaceAll(rgx_xhtml.less_than,    "&#60;")
+            .replaceAll(rgx_xhtml.greater_than, "&#62;")
             .replaceAll(rgx.nbsp_char,          " ")
             .replaceAll(rgx.br_line_inline,     "<br />")
             .replaceAll(rgx.br_line,            "<br />")
             .replaceAll(rgx.br_line_spaced,     "<br /><br />")
-            .replaceAll(rgx.xhtml_line_break,   "<br />");
+            .replaceAll(rgx_xhtml.line_break,   "<br />");
           return _txt;
         }
         string _html_font_face(string _txt){
@@ -272,23 +278,23 @@ template SQLiteFormatAndLoadObject() {
       }
       string html_special_characters(string _txt){
         _txt = _txt
-          .replaceAll(rgx.xhtml_ampersand,    "&#38;")
-          .replaceAll(rgx.xhtml_quotation,    "&#34;")
-          .replaceAll(rgx.xhtml_less_than,    "&#60;")
-          .replaceAll(rgx.xhtml_greater_than, "&#62;")
+          .replaceAll(rgx_xhtml.ampersand,    "&#38;")
+          .replaceAll(rgx_xhtml.quotation,    "&#34;")
+          .replaceAll(rgx_xhtml.less_than,    "&#60;")
+          .replaceAll(rgx_xhtml.greater_than, "&#62;")
           .replaceAll(rgx.nbsp_char,          " ")
           .replaceAll(rgx.br_line_inline,     "<br />")
           .replaceAll(rgx.br_line,            "<br />")
           .replaceAll(rgx.br_line_spaced,     "<br /><br />")
-          .replaceAll(rgx.xhtml_line_break,   "<br />");
+          .replaceAll(rgx_xhtml.line_break,   "<br />");
         return _txt;
       }
       string html_special_characters_code(string _txt){
         _txt = _txt
-          .replaceAll(rgx.xhtml_ampersand,    "&#38;")
-          .replaceAll(rgx.xhtml_quotation,    "&#34;")
-          .replaceAll(rgx.xhtml_less_than,    "&#60;")
-          .replaceAll(rgx.xhtml_greater_than, "&#62;")
+          .replaceAll(rgx_xhtml.ampersand,    "&#38;")
+          .replaceAll(rgx_xhtml.quotation,    "&#34;")
+          .replaceAll(rgx_xhtml.less_than,    "&#60;")
+          .replaceAll(rgx_xhtml.greater_than, "&#62;")
           .replaceAll(rgx.nbsp_char,          " ");
         return _txt;
       }
@@ -314,6 +320,7 @@ template SQLiteFormatAndLoadObject() {
         string          _xml_type = "seg",
       ) {
         static auto rgx = RgxO();
+        static auto rgx_xhtml = RgxXHTML();
         if (obj.metainfo.is_a == "group") {
           _txt = (_txt)
             .replaceAll(rgx.grouped_para_indent_1,
@@ -1614,7 +1621,7 @@ template SQLiteTablesCreate() {
         : "";
       if (db_filename.length > 0 && db_path.length > 0) {
         if ((opt_action.vox_gt1)) {
-          writeln("db name & path: ", db_path, db_filename);
+          writeln("db name & path: ", db_path, "/", db_filename);
         }
         auto pth_sqlite = spinePathsSQLite!()(db_filename, db_path);
         pth_sqlite.base.mkdirRecurse;
diff --git a/src/doc_reform/io_out/xmls.d b/src/doc_reform/io_out/xmls.d
index 0b0dce7..131dbb6 100644
--- a/src/doc_reform/io_out/xmls.d
+++ b/src/doc_reform/io_out/xmls.d
@@ -57,12 +57,17 @@ template outputXHTMLs() {
     std.conv : to;
   import
     doc_reform.io_out,
+    doc_reform.io_out.rgx,
+    doc_reform.meta.rgx_files,
+    doc_reform.io_out.rgx_xhtml,
     doc_reform.io_out.create_zip_file,
     doc_reform.io_out.xmls,
     doc_reform.io_out.xmls_css;
   mixin spineRgxOut;
+  mixin spineRgxXHTML;
   struct outputXHTMLs {
     static auto rgx = RgxO();
+    static auto rgx_xhtml = RgxXHTML();
     @safe string div_delimit(
                  string  part,
       return ref string  previous_part
@@ -95,10 +100,10 @@ template outputXHTMLs() {
     }
     @safe string special_characters_text(string _txt) {
       _txt = _txt
-        .replaceAll(rgx.xhtml_ampersand,    "&amp;")  // "&#38;"
-        .replaceAll(rgx.xhtml_quotation,    "&quot;") // "&#34;"
-        .replaceAll(rgx.xhtml_less_than,    "&lt;")   // "&#60;"
-        .replaceAll(rgx.xhtml_greater_than, "&gt;")   // "&#62;"
+        .replaceAll(rgx_xhtml.ampersand,    "&amp;")  // "&#38;"
+        .replaceAll(rgx_xhtml.quotation,    "&quot;") // "&#34;"
+        .replaceAll(rgx_xhtml.less_than,    "&lt;")   // "&#60;"
+        .replaceAll(rgx_xhtml.greater_than, "&gt;")   // "&#62;"
         .replaceAll(rgx.br_line,            "<br />")
         .replaceAll(rgx.br_line_inline,     "<br />")
         .replaceAll(rgx.br_line_spaced,     "<br />\n<br />")
@@ -161,7 +166,7 @@ template outputXHTMLs() {
       }
       if (!(obj.metainfo.is_a == "code")) {
         _txt = (_txt)
-          .replaceAll(rgx.xhtml_line_break,   "<br />");
+          .replaceAll(rgx_xhtml.line_break,   "<br />");
       }
       return _txt;
     }
diff --git a/src/doc_reform/meta/conf_make_meta_structs.d b/src/doc_reform/meta/conf_make_meta_structs.d
index 966e8d0..c6e7692 100644
--- a/src/doc_reform/meta/conf_make_meta_structs.d
+++ b/src/doc_reform/meta/conf_make_meta_structs.d
@@ -61,9 +61,12 @@ import
   std.conv : to;
 import
   doc_reform.meta.defaults,
+  doc_reform.meta.rgx_yaml,
   doc_reform.meta.rgx;
 mixin spineRgxIn;
 static auto rgx = RgxI();
+mixin spineRgxYamlTags;
+static auto rgx_y = RgxYaml();
 mixin InternalMarkup;
 static auto mkup = InlineMarkup();
 @safe string url_markup(string line) {
diff --git a/src/doc_reform/meta/conf_make_meta_yaml.d b/src/doc_reform/meta/conf_make_meta_yaml.d
index caf560f..fa87f9c 100644
--- a/src/doc_reform/meta/conf_make_meta_yaml.d
+++ b/src/doc_reform/meta/conf_make_meta_yaml.d
@@ -68,6 +68,7 @@ template contentYAMLtoSpineStruct() {
   import
     doc_reform.meta.conf_make_meta_structs,
     doc_reform.meta.defaults,
+    doc_reform.meta.rgx_yaml,
     doc_reform.meta.rgx;
   ConfComposite _struct_composite;
   @system auto contentYAMLtoSpineStruct(C,Y,M,O,Cfg)(
@@ -80,6 +81,8 @@ template contentYAMLtoSpineStruct() {
   ) {
     mixin spineRgxIn;
     static auto rgx = RgxI();
+    mixin spineRgxYamlTags;
+    static auto rgx_y = RgxYaml();
     string check_input_markup()(
       string _txt,
     ) {
@@ -107,11 +110,11 @@ template contentYAMLtoSpineStruct() {
               : _cfg.http_request_type;
           if (("webserv" in _yaml && _yaml["webserv"].type.sequence)
             && (_yaml["webserv"].type.mapping
-              && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+              && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
           ) {
             if ("http" in _yaml["webserv"]
               && _yaml["webserv"]["http"].type.string
-              && _yaml["webserv"]["http"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["webserv"]["http"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.conf.w_srv_http
                 = _yaml["webserv"]["http"].get!string;
@@ -128,11 +131,11 @@ template contentYAMLtoSpineStruct() {
               : _cfg.cgi_search_form_title;
           if (("webserv" in _yaml && _yaml["webserv"].type.sequence)
             && (_yaml["webserv"].type.mapping
-              && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+              && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
           ) {
             if ("cgi_search_form_title" in _yaml["webserv"]
               && _yaml["webserv"]["cgi_search_form_title"].type.string
-              && _yaml["webserv"]["cgi_search_form_title"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["webserv"]["cgi_search_form_title"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.conf.w_srv_cgi_search_form_title
                 = _yaml["webserv"]["cgi_search_form_title"].get!string;
@@ -149,11 +152,11 @@ template contentYAMLtoSpineStruct() {
               : _cfg.cgi_filename;
           if (("webserv" in _yaml && _yaml["webserv"].type.sequence)
             && (_yaml["webserv"].type.mapping
-              && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+              && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
           ) {
             if ("cgi_search_script" in _yaml["webserv"]
               && _yaml["webserv"]["cgi_search_script"].type.string
-              && _yaml["webserv"]["cgi_search_script"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["webserv"]["cgi_search_script"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.conf.w_srv_cgi_search_script
                 = _yaml["webserv"]["cgi_search_script"].get!string;
@@ -170,11 +173,11 @@ template contentYAMLtoSpineStruct() {
               : _cfg.db_sqlite_filename;
           if (("webserv" in _yaml && _yaml["webserv"].type.sequence)
             && (_yaml["webserv"].type.mapping
-              && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+              && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
           ) {
             if ("db_sqlite_filename" in _yaml["webserv"]
               && _yaml["webserv"]["db_sqlite_filename"].type.string
-              && _yaml["webserv"]["db_sqlite_filename"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["webserv"]["db_sqlite_filename"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.conf.w_srv_db_sqlite_filename
                 = _yaml["webserv"]["db_sqlite_filename"].get!string;
@@ -191,11 +194,11 @@ template contentYAMLtoSpineStruct() {
               : _cfg.db_sqlite_path;
           if (("webserv" in _yaml && _yaml["webserv"].type.sequence)
             && (_yaml["webserv"].type.mapping
-              && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+              && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
           ) {
             if ("db_sqlite_path" in _yaml["webserv"]
               && _yaml["webserv"]["db_sqlite_path"].type.string
-              && _yaml["webserv"]["db_sqlite_path"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["webserv"]["db_sqlite_path"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.conf.w_srv_db_sqlite_path
                 = _yaml["webserv"]["db_sqlite_path"].get!string;
@@ -212,11 +215,11 @@ template contentYAMLtoSpineStruct() {
               : _cfg.www_url_doc_root;
           if (("webserv" in _yaml && _yaml["webserv"].type.sequence)
             && (_yaml["webserv"].type.mapping
-              && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+              && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
           ) {
             if ("cgi_action" in _yaml["webserv"]
               && _yaml["webserv"]["cgi_action"].type.string
-              && _yaml["webserv"]["cgi_action"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["webserv"]["cgi_action"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.conf.w_srv_cgi_action
                 = _yaml["webserv"]["cgi_action"].get!string;
@@ -239,14 +242,14 @@ template contentYAMLtoSpineStruct() {
                 : _cfg.processing_path_doc_root;
             if (("webserv" in _yaml && _yaml["webserv"].type.sequence)
               && (_yaml["webserv"].type.mapping
-                && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+                && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
             ) {
               if (_yaml["output"].type.mapping
-                && _yaml["output"].tag.match(rgx.yaml_tag_is_map)
+                && _yaml["output"].tag.match(rgx_y.yaml_tag_is_map)
               ) {
                 if ("path" in _yaml["output"]
                   && _yaml["output"]["path"].type.string
-                  && _yaml["output"]["path"].tag.match(rgx.yaml_tag_is_str)
+                  && _yaml["output"]["path"].tag.match(rgx_y.yaml_tag_is_str)
                 ) {
                   if (_manifested.output.path == _manifested.env.pwd
                     && _yaml["output"]["path"].get!string.length > 0
@@ -267,11 +270,11 @@ template contentYAMLtoSpineStruct() {
                 : _cfg.processing_path_doc_root;
             if (("webserv" in _yaml && _yaml["webserv"].type.sequence)
               && (_yaml["webserv"].type.mapping
-                && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+                && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
             ) {
               if ("data_root_path" in _yaml["webserv"]
                 && _yaml["webserv"]["data_root_path"].type.string
-                && _yaml["webserv"]["data_root_path"].tag.match(rgx.yaml_tag_is_str)
+                && _yaml["webserv"]["data_root_path"].tag.match(rgx_y.yaml_tag_is_str)
               ) {
                 _struct_composite.conf.w_srv_data_root_path
                   = _yaml["webserv"]["data_root_path"].get!string;
@@ -289,11 +292,11 @@ template contentYAMLtoSpineStruct() {
               : _cfg.cgi_bin_root;
           if (("webserv" in _yaml && _yaml["webserv"].type.sequence)
             && (_yaml["webserv"].type.mapping
-              && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+              && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
           ) {
             if ("cgi_bin_path" in _yaml["webserv"]
               && _yaml["webserv"]["cgi_bin_path"].type.string
-              && _yaml["webserv"]["cgi_bin_path"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["webserv"]["cgi_bin_path"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.conf.w_srv_cgi_bin_path
                 = _yaml["webserv"]["cgi_bin_path"].get!string;
@@ -304,11 +307,11 @@ template contentYAMLtoSpineStruct() {
             = "";
           if (("webserv" in _yaml && _yaml["webserv"].type.sequence)
             && (_yaml["webserv"].type.mapping
-              && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+              && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
           ) {
             if ("data_root_part" in _yaml["webserv"]
               && _yaml["webserv"]["data_root_part"].type.string
-              && _yaml["webserv"]["data_root_part"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["webserv"]["data_root_part"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.conf.w_srv_data_root_part = _yaml["webserv"]["data_root_part"].get!string;
             }
@@ -318,11 +321,11 @@ template contentYAMLtoSpineStruct() {
             = "image";
           if (("webserv" in _yaml && _yaml["webserv"].type.sequence)
             && (_yaml["webserv"].type.mapping
-              && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+              && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
           ) {
             if ("images_root_part" in _yaml["webserv"]
               && _yaml["webserv"]["images_root_part"].type.string
-              && _yaml["webserv"]["images_root_part"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["webserv"]["images_root_part"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.conf.w_srv_images_root_part = _yaml["webserv"]["images_root_part"].get!string;
             }
@@ -332,31 +335,31 @@ template contentYAMLtoSpineStruct() {
       if (("webserv" in _yaml
         && _yaml["webserv"].type.sequence)
         && (_yaml["webserv"].type.mapping
-          && _yaml["webserv"].tag.match(rgx.yaml_tag_is_map))
+          && _yaml["webserv"].tag.match(rgx_y.yaml_tag_is_map))
       ) { // cannot be used as is with opt_action FIX look at remaining, decide what to do later
           if ("data_http" in _yaml["webserv"]
             && _yaml["webserv"]["data_http"].type.string
-            && _yaml["webserv"]["data_http"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["webserv"]["data_http"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.w_srv_data_http = _yaml["webserv"]["data_http"].get!string;
           }
           // if (_opt_action.*.length > 0) {
           if ("cgi_http" in _yaml["webserv"]
             && _yaml["webserv"]["cgi_http"].type.string
-            && _yaml["webserv"]["cgi_http"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["webserv"]["cgi_http"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.w_srv_cgi_http = _yaml["webserv"]["cgi_http"].get!string;
           }
           // if (_opt_action.*.length > 0) {
           if ("host" in _yaml["webserv"]
             && _yaml["webserv"]["host"].type.string
-            && _yaml["webserv"]["host"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["webserv"]["host"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.w_srv_host = _yaml["webserv"]["host"].get!string;
           }
           if ("data_root_url" in _yaml["webserv"]
             && _yaml["webserv"]["data_root_url"].type.string
-            && _yaml["webserv"]["data_root_url"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["webserv"]["data_root_url"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.w_srv_data_root_url      = _yaml["webserv"]["data_root_url"].get!string;
             _struct_composite.conf.w_srv_data_root_url_html =
@@ -373,7 +376,7 @@ template contentYAMLtoSpineStruct() {
           }
           if ("cgi_host" in _yaml["webserv"]
             && _yaml["webserv"]["cgi_host"].type.string
-            && _yaml["webserv"]["cgi_host"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["webserv"]["cgi_host"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.w_srv_cgi_host = _yaml["webserv"]["cgi_host"].get!string;
           } else { // composite construct
@@ -381,25 +384,25 @@ template contentYAMLtoSpineStruct() {
           }
           if ("cgi_bin_subpath" in _yaml["webserv"]
             && _yaml["webserv"]["cgi_bin_subpath"].type.string
-            && _yaml["webserv"]["cgi_bin_subpath"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["webserv"]["cgi_bin_subpath"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.w_srv_cgi_bin_subpath = _yaml["webserv"]["cgi_bin_subpath"].get!string;
           }
           if ("cgi_port" in _yaml["webserv"]
             && _yaml["webserv"]["cgi_port"].type.string
-            && _yaml["webserv"]["cgi_port"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["webserv"]["cgi_port"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.w_srv_cgi_port = _yaml["webserv"]["cgi_port"].get!string;
           }
           if ("cgi_user" in _yaml["webserv"]
             && _yaml["webserv"]["cgi_user"].type.string
-            && _yaml["webserv"]["cgi_user"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["webserv"]["cgi_user"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.w_srv_cgi_user = _yaml["webserv"]["cgi_user"].get!string;
           }
           if ("cgi_bin_url" in _yaml["webserv"]
             && _yaml["webserv"]["cgi_bin_url"].type.string
-            && _yaml["webserv"]["cgi_bin_url"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["webserv"]["cgi_bin_url"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.w_srv_cgi_bin_url = _yaml["webserv"]["cgi_bin_url"].get!string;
           } else {
@@ -415,7 +418,7 @@ template contentYAMLtoSpineStruct() {
           }
           // if ("cgi_file_links" in _yaml["webserv"]
           //   && _yaml["webserv"]["cgi_file_links"].type.string
-          //   && _yaml["webserv"]["cgi_file_links"].tag.match(rgx.yaml_tag_is_str)
+          //   && _yaml["webserv"]["cgi_file_links"].tag.match(rgx_y.yaml_tag_is_str)
           // ) {
           //   _struct_composite.conf.w_srv_cgi_file_links = _yaml["webserv"]["cgi_file_links"].get!string;
           // }
@@ -425,11 +428,11 @@ template contentYAMLtoSpineStruct() {
         && _yaml["processing"].type.sequence
       ) {
         if (_yaml["processing"].type.mapping
-          && _yaml["processing"].tag.match(rgx.yaml_tag_is_map)
+          && _yaml["processing"].tag.match(rgx_y.yaml_tag_is_map)
         ) {
           if ("concord_max" in _yaml["processing"]
             && _yaml["processing"]["concord_max"].type.string
-            && _yaml["processing"]["concord_max"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["processing"]["concord_max"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.processing_concord_max = _yaml["processing"]["concord_max"].get!string;
           }
@@ -439,65 +442,65 @@ template contentYAMLtoSpineStruct() {
         && _yaml["flag"].type.sequence
       ) {
         if (_yaml["flag"].type.mapping
-          && _yaml["flag"].tag.match(rgx.yaml_tag_is_map)
+          && _yaml["flag"].tag.match(rgx_y.yaml_tag_is_map)
         ) {
           if ("act0" in _yaml["flag"]
             && _yaml["flag"]["act0"].type.string
-            && _yaml["flag"]["act0"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["flag"]["act0"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.flag_act0 = _yaml["flag"]["act0"].get!string;
           }
           if ("act1" in _yaml["flag"]
             && _yaml["flag"]["act1"].type.string
-            && _yaml["flag"]["act1"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["flag"]["act1"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.flag_act1 = _yaml["flag"]["act1"].get!string;
           }
           if ("act2" in _yaml["flag"]
             && _yaml["flag"]["act2"].type.string
-            && _yaml["flag"]["act2"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["flag"]["act2"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.flag_act2 = _yaml["flag"]["act2"].get!string;
           }
           if ("act3" in _yaml["flag"]
             && _yaml["flag"]["act3"].type.string
-            && _yaml["flag"]["act3"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["flag"]["act3"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.flag_act3 = _yaml["flag"]["act3"].get!string;
           }
           if ("act4" in _yaml["flag"]
             && _yaml["flag"]["act4"].type.string
-            && _yaml["flag"]["act4"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["flag"]["act4"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.flag_act4 = _yaml["flag"]["act4"].get!string;
           }
           if ("act5" in _yaml["flag"]
             && _yaml["flag"]["act5"].type.string
-            && _yaml["flag"]["act5"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["flag"]["act5"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.flag_act5 = _yaml["flag"]["act5"].get!string;
           }
           if ("act6" in _yaml["flag"]
             && _yaml["flag"]["act6"].type.string
-            && _yaml["flag"]["act6"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["flag"]["act6"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.flag_act6 = _yaml["flag"]["act6"].get!string;
           }
           if ("act7" in _yaml["flag"]
             && _yaml["flag"]["act7"].type.string
-            && _yaml["flag"]["act7"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["flag"]["act7"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.flag_act7 = _yaml["flag"]["act7"].get!string;
           }
           if ("act8" in _yaml["flag"]
             && _yaml["flag"]["act8"].type.string
-            && _yaml["flag"]["act8"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["flag"]["act8"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.flag_act8 = _yaml["flag"]["act8"].get!string;
           }
           if ("act9" in _yaml["flag"]
             && _yaml["flag"]["act9"].type.string
-            && _yaml["flag"]["act9"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["flag"]["act9"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.flag_act9 = _yaml["flag"]["act9"].get!string;
           }
@@ -574,7 +577,7 @@ template contentYAMLtoSpineStruct() {
             : _cfg.default_papersize;
         if ("papersize" in _yaml["default"]
           && _yaml["default"]["papersize"].type.string
-          && _yaml["default"]["papersize"].tag.match(rgx.yaml_tag_is_str)
+          && _yaml["default"]["papersize"].tag.match(rgx_y.yaml_tag_is_str)
         ) {
           _set_papersize
             = _yaml["default"]["papersize"].get!string;
@@ -585,29 +588,29 @@ template contentYAMLtoSpineStruct() {
         "default" in _yaml
         && _yaml["default"].type.sequence
         && _yaml["default"].type.mapping
-        && _yaml["default"].tag.match(rgx.yaml_tag_is_map)
+        && _yaml["default"].tag.match(rgx_y.yaml_tag_is_map)
       ) {
         if ("text_wrap" in _yaml["default"]
           && _yaml["default"]["text_wrap"].type.string
-          && _yaml["default"]["text_wrap"].tag.match(rgx.yaml_tag_is_str)
+          && _yaml["default"]["text_wrap"].tag.match(rgx_y.yaml_tag_is_str)
         ) {
           _struct_composite.conf.set_text_wrap = _yaml["default"]["text_wrap"].get!string;
         }
         if ("emphasis" in _yaml["default"]
           && _yaml["default"]["emphasis"].type.string
-          && _yaml["default"]["emphasis"].tag.match(rgx.yaml_tag_is_str)
+          && _yaml["default"]["emphasis"].tag.match(rgx_y.yaml_tag_is_str)
         ) {
           _struct_composite.conf.set_emphasis = _yaml["default"]["emphasis"].get!string;
         }
         if ("language" in _yaml["default"]
           && _yaml["default"]["language"].type.string
-          && _yaml["default"]["language"].tag.match(rgx.yaml_tag_is_str)
+          && _yaml["default"]["language"].tag.match(rgx_y.yaml_tag_is_str)
         ) {
           _struct_composite.conf.set_language = _yaml["default"]["language"].get!string;
         }
         if ("digest" in _yaml["default"]
           && _yaml["default"]["digest"].type.string
-          && _yaml["default"]["digest"].tag.match(rgx.yaml_tag_is_str)
+          && _yaml["default"]["digest"].tag.match(rgx_y.yaml_tag_is_str)
         ) {
           _struct_composite.conf.set_digest = _yaml["default"]["digest"].get!string;
         }
@@ -616,29 +619,29 @@ template contentYAMLtoSpineStruct() {
         && _yaml["search"].type.sequence
       ) {
         if (_yaml["search"].type.mapping
-          && _yaml["search"].tag.match(rgx.yaml_tag_is_map)
+          && _yaml["search"].tag.match(rgx_y.yaml_tag_is_map)
         ) {
           if ("flag" in _yaml["search"]
             && _yaml["search"]["flag"].type.string
-            && _yaml["search"]["flag"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["search"]["flag"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.search_flag = _yaml["search"]["flag"].get!string;
           }
           if ("action" in _yaml["search"]
             && _yaml["search"]["action"].type.string
-            && _yaml["search"]["action"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["search"]["action"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.search_action = _yaml["search"]["action"].get!string;
           }
           if ("db" in _yaml["search"]
             && _yaml["search"]["db"].type.string
-            && _yaml["search"]["db"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["search"]["db"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.search_db = _yaml["search"]["db"].get!string;
           }
           if ("title" in _yaml["search"]
             && _yaml["search"]["title"].type.string
-            && _yaml["search"]["title"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["search"]["title"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.conf.search_title = _yaml["search"]["title"].get!string;
           }
@@ -650,47 +653,47 @@ template contentYAMLtoSpineStruct() {
         && _yaml["make"].type.sequence
       ) {
         if (_yaml["make"].type.mapping
-          && _yaml["make"].tag.match(rgx.yaml_tag_is_map)
+          && _yaml["make"].tag.match(rgx_y.yaml_tag_is_map)
         ) {
           if ("doc_type" in _yaml["make"]
             && _yaml["make"]["doc_type"].type.string
-            && _yaml["make"]["doc_type"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["doc_type"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.make_str.doc_type = _yaml["make"]["doc_type"].get!string;
           }
           if ("breaks" in _yaml["make"]
             && _yaml["make"]["breaks"].type.string
-            && _yaml["make"]["breaks"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["breaks"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.make_str.breaks = _yaml["make"]["breaks"].get!string;
           }
           if ("bold" in _yaml["make"]
             && _yaml["make"]["bold"].type.string
-            && _yaml["make"]["bold"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["bold"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.make_str.bold = _yaml["make"]["bold"].get!string;
           }
           if ("cover_image" in _yaml["make"]
             && _yaml["make"]["cover_image"].type.string
-            && _yaml["make"]["cover_image"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["cover_image"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.make_str.cover_image = _yaml["make"]["cover_image"].get!string;
           }
           if ("css" in _yaml["make"]
             && _yaml["make"]["css"].type.string
-            && _yaml["make"]["css"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["css"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.make_str.css = _yaml["make"]["css"].get!string;
           }
           if ("emphasis" in _yaml["make"]
             && _yaml["make"]["emphasis"].type.string
-            && _yaml["make"]["emphasis"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["emphasis"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.make_str.emphasis = _yaml["make"]["emphasis"].get!string;
           }
           if ("footer" in _yaml["make"]
             && _yaml["make"]["footer"].type.string
-            && _yaml["make"]["footer"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["footer"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             char[][] __match_footer_array
               = (cast(char[]) _yaml["make"]["footer"].get!string)
@@ -699,7 +702,7 @@ template contentYAMLtoSpineStruct() {
           }
           if ("headings" in _yaml["make"]
             && _yaml["make"]["headings"].type.string
-            && _yaml["make"]["headings"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["headings"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             char[][] __match_headings_array
               = (cast(char[]) _yaml["make"]["headings"].get!string)
@@ -707,7 +710,7 @@ template contentYAMLtoSpineStruct() {
             _struct_composite.make_str.headings = __match_headings_array.to!(string[]);
           } else if ("headings" in _yaml["make"]
             && _yaml["make"]["headings"].type.string
-            && _yaml["make"]["headings"].tag.match(rgx.yaml_tag_is_seq)
+            && _yaml["make"]["headings"].tag.match(rgx_y.yaml_tag_is_seq)
           ) {
             foreach(string identify_heading_level; _yaml["make"]["headings"]) {
               _struct_composite.make_str.headings ~= identify_heading_level;
@@ -715,7 +718,7 @@ template contentYAMLtoSpineStruct() {
           }
           if ("home_button_image" in _yaml["make"]
             && _yaml["make"]["home_button_image"].type.string
-            && _yaml["make"]["home_button_image"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["home_button_image"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             char[][] __match_home_button_image_array
               = (cast(char[]) _yaml["make"]["home_button_image"].get!string)
@@ -724,12 +727,12 @@ template contentYAMLtoSpineStruct() {
           }
           if ("home_button_text" in _yaml["make"]
             && _yaml["make"]["home_button_text"].type.string
-            && _yaml["make"]["home_button_text"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["home_button_text"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.make_str.home_button_text = _yaml["make"]["home_button_text"].get!string;
           } else if ("home_button_text" in _yaml["make"]
             && _yaml["make"]["home_button_text"].type.string
-            && _yaml["make"]["home_button_text"].tag.match(rgx.yaml_tag_is_seq)
+            && _yaml["make"]["home_button_text"].tag.match(rgx_y.yaml_tag_is_seq)
           ) {
             _struct_composite.make_str.home_button_text = "";
             foreach(string hbt; _yaml["make"]["home_button_text"]) {
@@ -738,13 +741,13 @@ template contentYAMLtoSpineStruct() {
           }
           if ("italics" in _yaml["make"]
             && _yaml["make"]["italics"].type.string
-            && _yaml["make"]["italics"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["italics"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.make_str.italics = _yaml["make"]["italics"].get!string;
           }
           if ("auto_num_top_at_level" in _yaml["make"]
             && _yaml["make"]["auto_num_top_at_level"].type.string
-            && _yaml["make"]["auto_num_top_at_level"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["auto_num_top_at_level"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.make_str.auto_num_top_at_level = _yaml["make"]["auto_num_top_at_level"].get!string;
             switch (_yaml["make"]["auto_num_top_at_level"].get!string) {
@@ -770,12 +773,12 @@ template contentYAMLtoSpineStruct() {
           }
           if ("auto_num_depth" in _yaml["make"]
             && _yaml["make"]["auto_num_depth"].type.string
-            && _yaml["make"]["auto_num_depth"].tag.match(rgx.yaml_tag_is_int)
+            && _yaml["make"]["auto_num_depth"].tag.match(rgx_y.yaml_tag_is_int)
           ) { // not sure implemented for documents
             _struct_composite.make_str.auto_num_depth = _yaml["make"]["auto_num_depth"].get!int;
           } else if ("auto_num_depth" in _yaml["make"]
             && _yaml["make"]["auto_num_depth"].type.string
-            && _yaml["make"]["auto_num_depth"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["make"]["auto_num_depth"].tag.match(rgx_y.yaml_tag_is_str)
           ) { // not sure implemented for documents
             _struct_composite.make_str.auto_num_depth = _yaml["make"]["auto_num_depth"].get!int;
           }
@@ -808,34 +811,34 @@ template contentYAMLtoSpineStruct() {
           && _yaml["creator"].type.sequence
         ) {
           if (_yaml["creator"].type.mapping
-            && _yaml["creator"].tag.match(rgx.yaml_tag_is_map)
+            && _yaml["creator"].tag.match(rgx_y.yaml_tag_is_map)
           ) {
             if ("author" in _yaml["creator"]
               && _yaml["creator"]["author"].type.string
-              && _yaml["creator"]["author"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["creator"]["author"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.creator_author = _yaml["creator"]["author"].get!string;
             }
             if ("email" in _yaml["creator"]
               && _yaml["creator"]["email"].type.string
-              && _yaml["creator"]["email"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["creator"]["email"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.creator_author_email = _yaml["creator"]["email"].get!string;
             }
             if ("illustrator" in _yaml["creator"]
               && _yaml["creator"]["illustrator"].type.string
-              && _yaml["creator"]["illustrator"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["creator"]["illustrator"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.creator_illustrator = _yaml["creator"]["illustrator"].get!string;
             }
             if ("translator" in _yaml["creator"]
               && _yaml["creator"]["translator"].type.string
-              && _yaml["creator"]["translator"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["creator"]["translator"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.creator_translator = _yaml["creator"]["translator"].get!string;
             }
           } else if (_yaml["creator"].type.string
-            && _yaml["creator"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["creator"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.creator_author = _yaml["creator"].get!string;
           }
@@ -875,57 +878,57 @@ template contentYAMLtoSpineStruct() {
           && _yaml["title"].type.sequence
         ) {
           if (_yaml["title"].type.mapping
-            && _yaml["title"].tag.match(rgx.yaml_tag_is_map)
+            && _yaml["title"].tag.match(rgx_y.yaml_tag_is_map)
           ) {
             if ("main" in _yaml["title"]
               && _yaml["title"]["main"].type.string
-              && _yaml["title"]["main"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["title"]["main"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.title_main = _yaml["title"]["main"].get!string;
             } else if ("title" in _yaml["title"]
               && _yaml["title"]["title"].type.string
-              && _yaml["title"]["title"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["title"]["title"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.title_main = _yaml["title"]["title"].get!string;
             }
             if ("edition" in _yaml["title"]
               && _yaml["title"]["edition"].type.string
-              && _yaml["title"]["edition"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["title"]["edition"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.title_edition = _yaml["title"]["edition"].get!string;
             }
             if ("full" in _yaml["title"]
               && _yaml["title"]["full"].type.string
-              && _yaml["title"]["full"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["title"]["full"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.title_full = _yaml["title"]["full"].get!string;
             }
             if ("language" in _yaml["title"]
               && _yaml["title"]["language"].type.string
-              && _yaml["title"]["language"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["title"]["language"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.title_language = _yaml["title"]["language"].get!string;
             }
             if ("note" in _yaml["title"]
               && _yaml["title"]["note"].type.string
-              && _yaml["title"]["note"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["title"]["note"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.title_note = _yaml["title"]["note"].get!string;
             }
             if ("subtitle" in _yaml["title"]
               && _yaml["title"]["subtitle"].type.string
-              && _yaml["title"]["subtitle"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["title"]["subtitle"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.title_subtitle = _yaml["title"]["subtitle"].get!string;
             } else if ("sub" in _yaml["title"]
               && _yaml["title"]["sub"].type.string
-              && _yaml["title"]["sub"].tag.match(rgx.yaml_tag_is_str)
+              && _yaml["title"]["sub"].tag.match(rgx_y.yaml_tag_is_str)
             ) {
               _struct_composite.meta.title_subtitle = _yaml["title"]["sub"].get!string;
             }
           } else if (
             _yaml["title"].type.string
-            && _yaml["title"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["title"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.title_main = _yaml["title"].get!string;
           }
@@ -947,29 +950,29 @@ template contentYAMLtoSpineStruct() {
         && _yaml["classify"].type.sequence
       ) {
         if (_yaml["classify"].type.mapping
-          && _yaml["classify"].tag.match(rgx.yaml_tag_is_map)
+          && _yaml["classify"].tag.match(rgx_y.yaml_tag_is_map)
         ) {
           if ("dewey" in _yaml["classify"]
             && _yaml["classify"]["dewey"].type.string
-            && _yaml["classify"]["dewey"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["classify"]["dewey"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.classify_dewey = _yaml["classify"]["dewey"].get!string;
           }
           if ("loc" in _yaml["classify"]
             && _yaml["classify"]["loc"].type.string
-            && _yaml["classify"]["loc"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["classify"]["loc"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.classify_loc = _yaml["classify"]["loc"].get!string;
           }
           if ("keywords" in _yaml["classify"]
             && _yaml["classify"]["keywords"].type.string
-            && _yaml["classify"]["keywords"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["classify"]["keywords"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.classify_keywords = _yaml["classify"]["keywords"].get!string;
           }
           if ("topic_register" in _yaml["classify"]
             && _yaml["classify"]["topic_register"].type.string
-            && _yaml["classify"]["topic_register"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["classify"]["topic_register"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.classify_topic_register = _yaml["classify"]["topic_register"].get!string;
             if (_struct_composite.meta.classify_topic_register.length > 0) {
@@ -1017,47 +1020,47 @@ template contentYAMLtoSpineStruct() {
         && _yaml["date"].type.sequence
       ) {
         if (_yaml["date"].type.mapping
-          && _yaml["date"].tag.match(rgx.yaml_tag_is_map)
+          && _yaml["date"].tag.match(rgx_y.yaml_tag_is_map)
         ) {
           if ("added_to_site" in _yaml["date"]
             && _yaml["date"]["added_to_site"].type.string
-            && _yaml["date"]["added_to_site"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["date"]["added_to_site"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.date_added_to_site = _yaml["date"]["added_to_site"].get!string;
           }
           if ("available" in _yaml["date"]
             && _yaml["date"]["available"].type.string
-            && _yaml["date"]["available"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["date"]["available"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.date_available = _yaml["date"]["available"].get!string;
           }
           if ("created" in _yaml["date"]
             && _yaml["date"]["created"].type.string
-            && _yaml["date"]["created"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["date"]["created"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.date_created = _yaml["date"]["created"].get!string;
           }
           if ("issued" in _yaml["date"]
             && _yaml["date"]["issued"].type.string
-            && _yaml["date"]["issued"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["date"]["issued"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.date_issued = _yaml["date"]["issued"].get!string;
           }
           if ("modified" in _yaml["date"]
             && _yaml["date"]["modified"].type.string
-            && _yaml["date"]["modified"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["date"]["modified"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.date_modified = _yaml["date"]["modified"].get!string;
           }
           if ("published" in _yaml["date"]
             && _yaml["date"]["published"].type.string
-            && _yaml["date"]["published"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["date"]["published"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.date_published = _yaml["date"]["published"].get!string;
           }
           if ("valid" in _yaml["date"]
             && _yaml["date"]["valid"].type.string
-            && _yaml["date"]["valid"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["date"]["valid"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.date_valid = _yaml["date"]["valid"].get!string;
           }
@@ -1073,23 +1076,23 @@ template contentYAMLtoSpineStruct() {
         && _yaml["notes"].type.sequence
       ) {
         if (_yaml["notes"].type.mapping
-          && _yaml["notes"].tag.match(rgx.yaml_tag_is_map)
+          && _yaml["notes"].tag.match(rgx_y.yaml_tag_is_map)
         ) {
           if ("abstract" in _yaml["notes"]
             && _yaml["notes"]["abstract"].type.string
-            && _yaml["notes"]["abstract"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["notes"]["abstract"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.notes_abstract = _yaml["notes"]["abstract"].get!string;
           }
           if ("description" in _yaml["notes"]
             && _yaml["notes"]["description"].type.string
-            && _yaml["notes"]["description"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["notes"]["description"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.notes_description = _yaml["notes"]["description"].get!string;
           }
           if ("summary" in _yaml["notes"]
             && _yaml["notes"]["summary"].type.string
-            && _yaml["notes"]["summary"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["notes"]["summary"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.notes_summary = _yaml["notes"]["summary"].get!string;
           }
@@ -1099,29 +1102,29 @@ template contentYAMLtoSpineStruct() {
         && _yaml["original"].type.sequence
       ) {
         if (_yaml["original"].type.mapping
-          && _yaml["original"].tag.match(rgx.yaml_tag_is_map)
+          && _yaml["original"].tag.match(rgx_y.yaml_tag_is_map)
         ) {
           if ("language" in _yaml["original"]
             && _yaml["original"]["language"].type.string
-            && _yaml["original"]["language"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["original"]["language"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.original_language = _yaml["original"]["language"].get!string;
           }
           if ("language_char" in _yaml["original"]
             && _yaml["original"]["language_char"].type.string
-            && _yaml["original"]["language_char"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["original"]["language_char"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.original_language_char = _yaml["original"]["language_char"].get!string;
           }
           if ("source" in _yaml["original"]
             && _yaml["original"]["source"].type.string
-            && _yaml["original"]["source"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["original"]["source"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.original_source = _yaml["original"]["source"].get!string;
           }
           if ("title" in _yaml["original"]
             && _yaml["original"]["title"].type.string
-            && _yaml["original"]["title"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["original"]["title"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.original_title = _yaml["original"]["title"].get!string;
           }
@@ -1136,59 +1139,59 @@ template contentYAMLtoSpineStruct() {
         && _yaml["rights"].type.sequence
       ) {
         if (_yaml["rights"].type.mapping
-          && _yaml["rights"].tag.match(rgx.yaml_tag_is_map)
+          && _yaml["rights"].tag.match(rgx_y.yaml_tag_is_map)
         ) {
           if ("copyright" in _yaml["rights"]
             && _yaml["rights"]["copyright"].type.string
-            && _yaml["rights"]["copyright"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["rights"]["copyright"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.rights_copyright = check_input_markup(_yaml["rights"]["copyright"].get!string);
           }
           if ("copyright_text" in _yaml["rights"]
             && _yaml["rights"]["copyright_text"].type.string
-            && _yaml["rights"]["copyright_text"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["rights"]["copyright_text"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.rights_copyright_text = _yaml["rights"]["copyright_text"].get!string;
           }
           if ("copyright_audio" in _yaml["rights"]
             && _yaml["rights"]["copyright_audio"].type.string
-            && _yaml["rights"]["copyright_audio"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["rights"]["copyright_audio"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.rights_copyright_audio = _yaml["rights"]["copyright_audio"].get!string;
           }
           if ("copyright_cover" in _yaml["rights"]
             && _yaml["rights"]["copyright_cover"].type.string
-            && _yaml["rights"]["copyright_cover"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["rights"]["copyright_cover"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.rights_copyright_cover = _yaml["rights"]["copyright_cover"].get!string;
           }
           if ("copyright_illustrations" in _yaml["rights"]
             && _yaml["rights"]["copyright_illustrations"].type.string
-            && _yaml["rights"]["copyright_illustrations"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["rights"]["copyright_illustrations"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.rights_copyright_illustrations = _yaml["rights"]["copyright_illustrations"].get!string;
           }
           if ("copyright_photographs" in _yaml["rights"]
             && _yaml["rights"]["copyright_photographs"].type.string
-            && _yaml["rights"]["copyright_photographs"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["rights"]["copyright_photographs"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.rights_copyright_photographs = _yaml["rights"]["copyright_photographs"].get!string;
           }
           if ("copyright_translation" in _yaml["rights"]
             && _yaml["rights"]["copyright_translation"].type.string
-            && _yaml["rights"]["copyright_translation"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["rights"]["copyright_translation"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.rights_copyright_translation = _yaml["rights"]["copyright_translation"].get!string;
           }
           if ("copyright_video" in _yaml["rights"]
             && _yaml["rights"]["copyright_video"].type.string
-            && _yaml["rights"]["copyright_video"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["rights"]["copyright_video"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.rights_copyright_video = _yaml["rights"]["copyright_video"].get!string;
           }
           if ("license" in _yaml["rights"]
             && _yaml["rights"]["license"].type.string
-            && _yaml["rights"]["license"].tag.match(rgx.yaml_tag_is_str)
+            && _yaml["rights"]["license"].tag.match(rgx_y.yaml_tag_is_str)
           ) {
             _struct_composite.meta.rights_license = check_input_markup(_yaml["rights"]["license"].get!string);
           }
@@ -1245,10 +1248,13 @@ template docHeaderMakeAndMetaTupYamlExtractAndConvertToStruct() {
   import
     doc_reform.meta.conf_make_meta_structs,
     doc_reform.meta.conf_make_meta_json,
+    doc_reform.meta.rgx_yaml,
     doc_reform.meta.rgx;
   mixin spineRgxIn;
   mixin contentJSONtoSpineStruct;
   static auto rgx = RgxI();
+  mixin spineRgxYamlTags;
+  static auto rgx_y = RgxYaml();
   @system auto docHeaderMakeAndMetaTupYamlExtractAndConvertToStruct(CCm,Src,M,O,Cfg)(
     Src     header_src,
     CCm     _make_and_meta_struct,
diff --git a/src/doc_reform/meta/metadoc.d b/src/doc_reform/meta/metadoc.d
index 16cc6e7..abaa874 100644
--- a/src/doc_reform/meta/metadoc.d
+++ b/src/doc_reform/meta/metadoc.d
@@ -1,3 +1,53 @@
+/+
+- Name: Spine, Doc Reform
+  - Description: documents, structuring, processing, publishing, search
+    - static content generator
+
+  - Author: Ralph Amissah
+    [ralph.amissah@gmail.com]
+
+  - Copyright: (C) 2015 - 2022 Ralph Amissah, All Rights
+    Reserved.
+
+  - License: AGPL 3 or later:
+
+    Spine (SiSU), a framework for document structuring, publishing and
+    search
+
+    Copyright (C) Ralph Amissah
+
+    This program is free software: you can redistribute it and/or modify it
+    under the terms of the GNU AFERO General Public License as published by the
+    Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    This program is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+    more details.
+
+    You should have received a copy of the GNU General Public License along with
+    this program. If not, see [https://www.gnu.org/licenses/].
+
+    If you have Internet connection, the latest version of the AGPL should be
+    available at these locations:
+    [https://www.fsf.org/licensing/licenses/agpl.html]
+    [https://www.gnu.org/licenses/agpl.html]
+
+  - Spine (by Doc Reform, related to SiSU) uses standard:
+    - docReform markup syntax
+      - standard SiSU markup syntax with modified headers and minor modifications
+    - docReform object numbering
+      - standard SiSU object citation numbering & system
+
+  - Homepages:
+    [https://www.doc_reform.org]
+    [https://www.sisudoc.org]
+
+  - Git
+    [https://git.sisudoc.org/projects/?p=software/spine.git;a=summary]
+
++/
 module doc_reform.meta.metadoc;
 template spineAbstraction() {
   import
@@ -8,18 +58,15 @@ template spineAbstraction() {
     doc_reform.meta.conf_make_meta_structs,
     doc_reform.meta.conf_make_meta_json,
     doc_reform.meta.defaults,
-    doc_reform.meta.rgx,
     doc_reform.io_in.paths_source,
     doc_reform.io_in.read_config_files,
     doc_reform.io_in.read_source_files,
     doc_reform.io_out.hub;
-  mixin spineRgxIn;
   mixin spineBiblio;
   mixin outputHub;
   enum headBody { header, body_content, insert_file_list, image_list }
   enum makeMeta { make, meta }
   enum docAbst  { doc_abstract_obj, doc_has }
-  static auto rgx = RgxI();
   @system auto spineAbstraction(E,P,O,Cfg,M,S)(
     E _env,
     P program_info,
diff --git a/src/doc_reform/meta/metadoc_from_src.d b/src/doc_reform/meta/metadoc_from_src.d
index 9a0940f..0c23101 100644
--- a/src/doc_reform/meta/metadoc_from_src.d
+++ b/src/doc_reform/meta/metadoc_from_src.d
@@ -65,6 +65,7 @@ template docAbstraction() {
   import
     doc_reform.meta,
     doc_reform.meta.defaults,
+    doc_reform.meta.rgx,
     doc_reform.meta.metadoc_object_setter,
     doc_reform.meta.rgx;
                                                                                 /+ ↓ abstraction mixins +/
@@ -356,10 +357,10 @@ template docAbstraction() {
     static auto rgx = RgxI();
     static auto mkup = InlineMarkup();
     line = replaceAll!(m => mkup.quote_o ~ m[1] ~ mkup.quote_c)(line, rgx.within_quotes);
-    line = replaceAll!(m => mkup.mono ~ mkup.ff_o ~ m["text"] ~ mkup.ff_c ~ mkup.mono)(line, rgx.inline_mark_mono);
-    line = replaceAll!(m => mkup.cite ~ mkup.ff_o ~ m["text"] ~ mkup.ff_c ~ mkup.cite)(line, rgx.inline_mark_cite);
+    line = replaceAll!(m => "⑆" ~ mkup.mono ~ mkup.ff_o ~ m["text"] ~ mkup.ff_c ~ mkup.mono)(line, rgx.inline_mark_mono);
+    line = replaceAll!(m => "⑆" ~ mkup.cite ~ mkup.ff_o ~ m["text"] ~ mkup.ff_c ~ mkup.cite)(line, rgx.inline_mark_cite);
     foreach (regx; [rgx.inline_mark_emphasis, rgx.inline_mark_bold, rgx.inline_mark_underscore, rgx.inline_mark_italics, rgx.inline_mark_superscript, rgx.inline_mark_subscript, rgx.inline_mark_strike, rgx.inline_mark_insert]) {
-      line = replaceAll!(m => m["mark"] ~ mkup.ff_o ~ m["text"] ~ mkup.ff_c ~ m["mark"])(line, regx);
+      line = replaceAll!(m => "⑆" ~ m["mark"] ~ mkup.ff_o ~ m["text"] ~ mkup.ff_c ~ m["mark"])(line, regx);
     }
     return line;
   }
@@ -4261,17 +4262,17 @@ template docAbstraction() {
     if (textline.match(rgx.inline_faces_line)) {
       textline = textline
         .replaceFirst(rgx.inline_emphasis_line,
-          format(q"┃%s%s%s%s%s%s┃",
-            mkup.emph, mkup.ff_o, "$1", mkup.ff_c, mkup.emph, "$2"))
+          format(q"┃%s%s%s%s%s%s%s┃",
+            "⑆", mkup.emph, mkup.ff_o, "$1", mkup.ff_c, mkup.emph, "$2"))
         .replaceFirst(rgx.inline_bold_line,
-          format(q"┃%s%s%s%s%s%s┃",
-            mkup.bold, mkup.ff_o, "$1", mkup.ff_c, mkup.bold, "$2"))
+          format(q"┃%s%s%s%s%s%s%s┃",
+            "⑆", mkup.bold, mkup.ff_o, "$1", mkup.ff_c, mkup.bold, "$2"))
         .replaceFirst(rgx.inline_underscore_line,
-          format(q"┃%s%s%s%s%s%s┃",
-            mkup.underscore, mkup.ff_o, "$1", mkup.ff_c, mkup.underscore, "$2"))
+          format(q"┃%s%s%s%s%s%s%s┃",
+            "⑆", mkup.underscore, mkup.ff_o, "$1", mkup.ff_c, mkup.underscore, "$2"))
         .replaceFirst(rgx.inline_italics_line,
-          format(q"┃%s%s%s%s%s%s┃",
-            mkup.italic,  mkup.ff_o, "$1", mkup.ff_c, mkup.italic, "$2"));
+          format(q"┃%s%s%s%s%s%s%s┃",
+            "⑆", mkup.italic,  mkup.ff_o, "$1", mkup.ff_c, mkup.italic, "$2"));
     }
     return textline;
   }
@@ -5435,7 +5436,7 @@ template docAbstraction() {
         bookindex_unordered_hashes.byKey.array
         .sort!("toUpper(a) < toUpper(b)", SwapStrategy.stable).release;
       foreach (mainkey; mainkeys) {
-        write("_0_1 !┨", mainkey, "┣! ");
+        write("_0_1 ⑆!┨", mainkey, "┣! ");
         foreach (ref_; bookindex_unordered_hashes[mainkey]["_a"]) {
           auto go = ref_.replaceAll(rgx.book_index_go, "$1");
           write(" {", ref_, "}#", go, ", ");
@@ -5542,7 +5543,7 @@ template docAbstraction() {
         string[dchar] transTable = [' ' : "_"];
         foreach (mainkey; mainkeys) {
           bi_tmp_tags = [""];
-          bi_tmp = mkup.bold ~ mkup.ff_o ~ mainkey ~ mkup.ff_c ~ mkup.bold ~ " ";
+          bi_tmp = "⑆" ~ mkup.bold ~ mkup.ff_o ~ mainkey ~ mkup.ff_c ~ mkup.bold ~ " ";
           buffer.clear();
           bi_tmp_tags ~= translate(mainkey, transTable);
           auto bkidx_lnk(string locs) {
diff --git a/src/doc_reform/meta/package.d b/src/doc_reform/meta/package.d
index 3b6cdcd..4d52077 100644
--- a/src/doc_reform/meta/package.d
+++ b/src/doc_reform/meta/package.d
@@ -50,8 +50,7 @@
 +/
 module doc_reform.meta;
 public import
-  doc_reform.meta.defaults,
-  doc_reform.meta.rgx;
+  doc_reform.meta.defaults;
 /+ std +/
 public import
   std.array,
diff --git a/src/doc_reform/meta/rgx.d b/src/doc_reform/meta/rgx.d
index 8ecb829..1d40491 100644
--- a/src/doc_reform/meta/rgx.d
+++ b/src/doc_reform/meta/rgx.d
@@ -57,10 +57,6 @@ static template spineRgxIn() {
     /+ misc +/
     static flag_action                                    = ctRegex!(`^(--[a-z][a-z0-9-]+)$`);
     static within_quotes                                  = ctRegex!(`"(.+?)"`, "m");
-    static yaml_tag_is_str                                = ctRegex!(`:str$`);
-    static yaml_tag_is_int                                = ctRegex!(`:int$`);
-    static yaml_tag_is_map                                = ctRegex!(`:map$`);
-    static yaml_tag_is_seq                                = ctRegex!(`:seq$`);
     static make_heading_delimiter                         = ctRegex!(`[;][ ]*`);
     static arr_delimiter                                  = ctRegex!(`[ ]*[;][ ]*`);
     static name_delimiter                                 = ctRegex!(`^([^,]+)[ ]*,[ ]+(.+?)$`);
@@ -195,9 +191,6 @@ static template spineRgxIn() {
     static topic_register_main_term_plus_rest_split = ctRegex!(`\s*:\s*`);
     static topic_register_sub_terms_split           = ctRegex!(`\s*\|\s*`);
     static topic_register_multiple_sub_terms_split  = ctRegex!(`␣([^|␣]+(?:\|[^|␣]+)+)`);
-    /+ language codes +/
-    auto language_code_and_filename                                    =
-       ctRegex!("(?:^|[/])(am|bg|bn|br|ca|cs|cy|da|de|el|en|eo|es|et|eu|fi|fr|ga|gl|he|hi|hr|hy|ia|is|it|ja|ko|la|lo|lt|lv|ml|mr|nl|no|nn|oc|pl|pt|pt_BR|ro|ru|sa|se|sk|sl|sq|sr|sv|ta|te|th|tk|tr|uk|ur|vi|zh)/[A-Za-z0-9._-].+?[.](?:sst|ssm)$");
     static newline                                  = ctRegex!("\n", "mg");
     static space                                    = ctRegex!(`[ ]`, "mg");
     static spaces_keep                              = ctRegex!(`(?P<keep_spaces>^[ ]+|[ ]{2,})`, "mg"); // code, verse, block
@@ -210,8 +203,7 @@ static template spineRgxIn() {
     static src_pth_contents                         = ctRegex!(`^(?P<path>[/]?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9][a-zA-Z0-9._-]*)/pod[.]manifest$`);
     static src_pth_zip                              = ctRegex!(`^(?P<path>[/]?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9._-]+[.]zip)$`);
     static src_pth_types                            = ctRegex!(`^(?P<path>[/]?[a-zA-Z0-9._-]+/)*(?P<gotfile>(?P<filename>[a-zA-Z0-9._-]+[.]ss[tm])|(?P<filelist>[a-zA-Z0-9._-]+/pod[.]manifest)|(?P<filezip>[a-zA-Z0-9._-]+[.]zip))$`);
-    static src_fn                                   =
-      ctRegex!(`^([/]?(?:[a-zA-Z0-9._-]+/)*)(?P<fn_src>(?P<fn_base>[a-zA-Z0-9._-]+)[.](?P<fn_src_suffix>ss[tm]))$`);
+    static src_fn                                   = ctRegex!(`^([/]?(?:[a-zA-Z0-9._-]+/)*)(?P<fn_src>(?P<fn_base>[a-zA-Z0-9._-]+)[.](?P<fn_src_suffix>ss[tm]))$`);
     static src_fn_master                            = ctRegex!(`^(?P<path>/?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9._-]+[.]ssm)$`);
     static src_fn_find_inserts                      = ctRegex!(`^(?P<path>/?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9._-]+[.]ss[im])$`);
     static insert_src_fn_ssi_or_sst                 = ctRegex!(`^<<\s*(?P<path>[a-zA-Z0-9._-]+/)*(?P<filename>[a-zA-Z0-9._-]+[.]ss[ti])$`);
diff --git a/src/doc_reform/meta/rgx_files.d b/src/doc_reform/meta/rgx_files.d
new file mode 100644
index 0000000..f86c416
--- /dev/null
+++ b/src/doc_reform/meta/rgx_files.d
@@ -0,0 +1,72 @@
+/+
+- Name: Spine, Doc Reform [a part of]
+  - Description: documents, structuring, processing, publishing, search
+    - static content generator
+
+  - Author: Ralph Amissah
+    [ralph.amissah@gmail.com]
+
+  - Copyright: (C) 2015 - 2022 Ralph Amissah, All Rights
+    Reserved.
+
+  - License: AGPL 3 or later:
+
+    Spine (SiSU), a framework for document structuring, publishing and
+    search
+
+    Copyright (C) Ralph Amissah
+
+    This program is free software: you can redistribute it and/or modify it
+    under the terms of the GNU AFERO General Public License as published by the
+    Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    This program is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+    more details.
+
+    You should have received a copy of the GNU General Public License along with
+    this program. If not, see [https://www.gnu.org/licenses/].
+
+    If you have Internet connection, the latest version of the AGPL should be
+    available at these locations:
+    [https://www.fsf.org/licensing/licenses/agpl.html]
+    [https://www.gnu.org/licenses/agpl.html]
+
+  - Spine (by Doc Reform, related to SiSU) uses standard:
+    - docReform markup syntax
+      - standard SiSU markup syntax with modified headers and minor modifications
+    - docReform object numbering
+      - standard SiSU object citation numbering & system
+
+  - Homepages:
+    [https://www.doc_reform.org]
+    [https://www.sisudoc.org]
+
+  - Git
+    [https://git.sisudoc.org/projects/?p=software/spine.git;a=summary]
+
++/
+/++
+  regex: regular expressions used in sisu document parser
++/
+module doc_reform.meta.rgx_files;
+static template spineRgxFiles() {
+  static struct RgxFiles {
+    static src_pth_sst_or_ssm                       = ctRegex!(`^(?P<path>[/]?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9._-]+[.](?P<extension>ss[tm]))$`);
+    static src_pth_pod_sst_or_ssm                   = ctRegex!(`^(?P<podpath>[/]?(?:[a-zA-Z0-9._-]+/)*)media/text/[a-z]{2}/(?P<filename>[a-zA-Z0-9][a-zA-Z0-9._-]*?[.]ss[tm])$`);
+    static src_pth_contents                         = ctRegex!(`^(?P<path>[/]?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9][a-zA-Z0-9._-]*)/pod[.]manifest$`);
+    static src_pth_zip                              = ctRegex!(`^(?P<path>[/]?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9._-]+[.]zip)$`);
+    static src_pth_types                            = ctRegex!(`^(?P<path>[/]?[a-zA-Z0-9._-]+/)*(?P<gotfile>(?P<filename>[a-zA-Z0-9._-]+[.]ss[tm])|(?P<filelist>[a-zA-Z0-9._-]+/pod[.]manifest)|(?P<filezip>[a-zA-Z0-9._-]+[.]zip))$`);
+    static src_fn                                   = ctRegex!(`^([/]?(?:[a-zA-Z0-9._-]+/)*)(?P<fn_src>(?P<fn_base>[a-zA-Z0-9._-]+)[.](?P<fn_src_suffix>ss[tm]))$`);
+    static src_fn_master                            = ctRegex!(`^(?P<path>/?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9._-]+[.]ssm)$`);
+    static src_fn_find_inserts                      = ctRegex!(`^(?P<path>/?(?:[a-zA-Z0-9._-]+/)*)(?P<filename>[a-zA-Z0-9._-]+[.]ss[im])$`);
+    static insert_src_fn_ssi_or_sst                 = ctRegex!(`^<<\s*(?P<path>[a-zA-Z0-9._-]+/)*(?P<filename>[a-zA-Z0-9._-]+[.]ss[ti])$`);
+    static src_base_parent_dir_name                 = ctRegex!(`[/](?P<dir>(?:[a-zA-Z0-9._-]+))(?:/media/text/[a-z]{2})$`); // formalizes dir structure
+    static src_formalised_file_path_parts           = ctRegex!(`(?P<pth>(?:[/a-zA-Z0-9._-]+?)(?P<dir>[a-zA-Z0-9._-]+))(?:/media/text/[a-z]{2})$`); // formalizes dir structure
+    /+ language codes +/
+    auto language_code_and_filename                                    =
+       ctRegex!("(?:^|[/])(am|bg|bn|br|ca|cs|cy|da|de|el|en|eo|es|et|eu|fi|fr|ga|gl|he|hi|hr|hy|ia|is|it|ja|ko|la|lo|lt|lv|ml|mr|nl|no|nn|oc|pl|pt|pt_BR|ro|ru|sa|se|sk|sl|sq|sr|sv|ta|te|th|tk|tr|uk|ur|vi|zh)/[A-Za-z0-9._-].+?[.](?:sst|ssm)$");
+  }
+}
diff --git a/src/doc_reform/meta/rgx_yaml_tags.d b/src/doc_reform/meta/rgx_yaml_tags.d
new file mode 100644
index 0000000..b2a15c1
--- /dev/null
+++ b/src/doc_reform/meta/rgx_yaml_tags.d
@@ -0,0 +1,62 @@
+/+
+- Name: Spine, Doc Reform [a part of]
+  - Description: documents, structuring, processing, publishing, search
+    - static content generator
+
+  - Author: Ralph Amissah
+    [ralph.amissah@gmail.com]
+
+  - Copyright: (C) 2015 - 2022 Ralph Amissah, All Rights
+    Reserved.
+
+  - License: AGPL 3 or later:
+
+    Spine (SiSU), a framework for document structuring, publishing and
+    search
+
+    Copyright (C) Ralph Amissah
+
+    This program is free software: you can redistribute it and/or modify it
+    under the terms of the GNU AFERO General Public License as published by the
+    Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    This program is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+    more details.
+
+    You should have received a copy of the GNU General Public License along with
+    this program. If not, see [https://www.gnu.org/licenses/].
+
+    If you have Internet connection, the latest version of the AGPL should be
+    available at these locations:
+    [https://www.fsf.org/licensing/licenses/agpl.html]
+    [https://www.gnu.org/licenses/agpl.html]
+
+  - Spine (by Doc Reform, related to SiSU) uses standard:
+    - docReform markup syntax
+      - standard SiSU markup syntax with modified headers and minor modifications
+    - docReform object numbering
+      - standard SiSU object citation numbering & system
+
+  - Homepages:
+    [https://www.doc_reform.org]
+    [https://www.sisudoc.org]
+
+  - Git
+    [https://git.sisudoc.org/projects/?p=software/spine.git;a=summary]
+
++/
+/++
+  regex: regular expressions used in sisu document parser
++/
+module doc_reform.meta.rgx_yaml;
+static template spineRgxYamlTags() {
+  static struct RgxYaml {
+    static yaml_tag_is_str                          = ctRegex!(`:str$`);
+    static yaml_tag_is_int                          = ctRegex!(`:int$`);
+    static yaml_tag_is_map                          = ctRegex!(`:map$`);
+    static yaml_tag_is_seq                          = ctRegex!(`:seq$`);
+  }
+}
diff --git a/src/doc_reform/spine.d b/src/doc_reform/spine.d
index cd780c6..4fca299 100755
--- a/src/doc_reform/spine.d
+++ b/src/doc_reform/spine.d
@@ -75,6 +75,8 @@ import
   doc_reform.meta.defaults,
   doc_reform.meta.doc_debugs,
   doc_reform.meta.rgx,
+  doc_reform.meta.rgx_yaml,
+  doc_reform.meta.rgx_files,
   doc_reform.io_in.paths_source,
   doc_reform.io_in.read_config_files,
   doc_reform.io_in.read_source_files,
@@ -86,6 +88,8 @@ string project_name = "spine";
 string program_name = "spine";
 @system void main(string[] args) {
   mixin spineRgxIn;
+  mixin spineRgxYamlTags;
+  mixin spineRgxFiles;
   mixin spineBiblio;
   mixin outputHub;
   auto hvst = spineCurateMetadata!();
@@ -93,6 +97,8 @@ string program_name = "spine";
   string arg_unrecognized;
   enum dAM { abstraction, matters }
   static auto rgx = RgxI();
+  static auto rgx_y = RgxYaml();
+  static auto rgx_files = RgxFiles();
   scope(success) {
     writefln(
       "~ run complete, ok ~ (%s-%s.%s.%s, %s D:%s, %s %s)",
@@ -858,7 +864,7 @@ string program_name = "spine";
     } else if (_opt_action.require_processing_files) { /+ cli, assumed to be path to source files +/
       auto _manifest_start = PodManifest!()(_opt_action, arg);
       if ( /+ pod files +/
-        !(arg.match(rgx.src_pth_sst_or_ssm))
+        !(arg.match(rgx_files.src_pth_sst_or_ssm))
         && _manifest_start.pod_manifest_file_with_path
         && _opt_action.abstraction
       ) {
@@ -886,10 +892,10 @@ string program_name = "spine";
                 }
                 if ("doc" in pod_manifest_yaml) {
                   if (pod_manifest_yaml["doc"].type.mapping
-                    && pod_manifest_yaml["doc"].tag.match(rgx.yaml_tag_is_map)
+                    && pod_manifest_yaml["doc"].tag.match(rgx_y.yaml_tag_is_map)
                   ) {
                     if ("path" in pod_manifest_yaml["doc"]) {
-                      if (pod_manifest_yaml["doc"]["path"].tag.match(rgx.yaml_tag_is_seq)) {
+                      if (pod_manifest_yaml["doc"]["path"].tag.match(rgx_y.yaml_tag_is_seq)) {
                         foreach (string _path; pod_manifest_yaml["doc"]["path"]) {
                           markup_contents_location_ ~= _path ~ "\n";
                           pod_manifest_root_content_paths_to_markup_location_raw_ ~=
@@ -897,7 +903,7 @@ string program_name = "spine";
                         }
                       } else if (
                         pod_manifest_yaml["doc"]["path"].type.string
-                        && pod_manifest_yaml["doc"]["path"].tag.match(rgx.yaml_tag_is_str)
+                        && pod_manifest_yaml["doc"]["path"].tag.match(rgx_y.yaml_tag_is_str)
                       ) {
                         markup_contents_location_ = pod_manifest_yaml["doc"]["path"].get!string;
                         pod_manifest_root_content_paths_to_markup_location_raw_ =
@@ -905,17 +911,17 @@ string program_name = "spine";
                       }
                     }
                     if ("filename" in pod_manifest_yaml["doc"]) {
-                      if (pod_manifest_yaml["doc"]["filename"].tag.match(rgx.yaml_tag_is_seq)) {
+                      if (pod_manifest_yaml["doc"]["filename"].tag.match(rgx_y.yaml_tag_is_seq)) {
                         foreach (string _filename; pod_manifest_yaml["doc"]["filename"]) {
                           if ("language" in pod_manifest_yaml["doc"]) {
-                            if (pod_manifest_yaml["doc"]["language"].tag.match(rgx.yaml_tag_is_seq)) {
+                            if (pod_manifest_yaml["doc"]["language"].tag.match(rgx_y.yaml_tag_is_seq)) {
                               foreach (string _lang; pod_manifest_yaml["doc"]["language"]) {
                                 markup_contents_location_ ~=
                                   "media/text/"
                                   ~ _lang ~ "/"
                                   ~ _filename ~ "\n";
                               }
-                            } else if (pod_manifest_yaml["doc"]["language"].tag.match(rgx.yaml_tag_is_str)
+                            } else if (pod_manifest_yaml["doc"]["language"].tag.match(rgx_y.yaml_tag_is_str)
                             ) {
                               markup_contents_location_ =
                                 "media/text/"
@@ -938,17 +944,17 @@ string program_name = "spine";
                         }
                       } else if (
                         pod_manifest_yaml["doc"]["filename"].type.string
-                        && pod_manifest_yaml["doc"]["filename"].tag.match(rgx.yaml_tag_is_str)
+                        && pod_manifest_yaml["doc"]["filename"].tag.match(rgx_y.yaml_tag_is_str)
                       ) {
                         if ("language" in pod_manifest_yaml["doc"]) {
-                          if (pod_manifest_yaml["doc"]["language"].tag.match(rgx.yaml_tag_is_seq)) {
+                          if (pod_manifest_yaml["doc"]["language"].tag.match(rgx_y.yaml_tag_is_seq)) {
                             foreach (string _lang; pod_manifest_yaml["doc"]["language"]) {
                               markup_contents_location_ ~=
                                 "media/text/"
                                 ~ _lang ~ "/"
                                 ~ pod_manifest_yaml["doc"]["filename"].get!string ~ "\n";
                             }
-                          } else if (pod_manifest_yaml["doc"]["language"].tag.match(rgx.yaml_tag_is_str)) {
+                          } else if (pod_manifest_yaml["doc"]["language"].tag.match(rgx_y.yaml_tag_is_str)) {
                             markup_contents_location_ =
                               "media/text/"
                               ~ pod_manifest_yaml["doc"]["language"].get!string
@@ -985,7 +991,7 @@ string program_name = "spine";
           = (cast(char[]) markup_contents_location_).split;
         auto tmp_dir_ = (sisudoc_txt_).dirName.array;
         foreach (markup_contents_location; markup_contents_locations_arr) {
-          assert(markup_contents_location.match(rgx.src_pth_sst_or_ssm),
+          assert(markup_contents_location.match(rgx_files.src_pth_sst_or_ssm),
             "not a recognised file: «" ~
             markup_contents_location ~ "»"
           );
@@ -999,14 +1005,14 @@ string program_name = "spine";
             _manifests ~= _manifested;
           }
         }
-      } else if (arg.match(rgx.src_pth_sst_or_ssm)) { /+ markup txt files +/
+      } else if (arg.match(rgx_files.src_pth_sst_or_ssm)) { /+ markup txt files +/
         if (exists(arg)==0) {
           writeln("ERROR >> Processing Skipped! File not found: ", arg);
         } else {
           _manifested = PathMatters!()(_opt_action, _env, arg, arg);
           _manifests ~= _manifested;
         }
-      } else if (arg.match(rgx.src_pth_zip)) {
+      } else if (arg.match(rgx_files.src_pth_zip)) {
         // fns_src ~= arg;          // gather input markup source file names for processing
       } else {                      // anything remaining, unused
         arg_unrecognized ~= " " ~ arg;
@@ -1042,7 +1048,7 @@ string program_name = "spine";
             }
           }
           enforce(
-            manifest.src.filename.match(rgx.src_pth_types),
+            manifest.src.filename.match(rgx_files.src_pth_types),
             "not a sisu markup filename: «" ~
             manifest.src.filename ~ "»"
           );
@@ -1155,7 +1161,7 @@ string program_name = "spine";
             }
           }
           enforce(
-            manifest.src.filename.match(rgx.src_pth_types),
+            manifest.src.filename.match(rgx_files.src_pth_types),
             "not a sisu markup filename: «" ~
             manifest.src.filename ~ "»"
           );
-- 
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