- document header and body
  - .sst .ssm split into header and body
  - .ssi body only, (no document header)
- change tracking of code blocks

- new dir for markup tools
  misc/util/d/tools/markup_conversion
- start looking at tools for converting
  - endnotes from binary to inline
  - sisu.rb to sisu spine in d
  - look at conversion of document headers to yaml
    from
    - bespoke sisu headers (original .rb)
    - sdlang
    - toml

- harvests add search form to db option
- dark theme input background color
  (follows cgi search form)
- html tidy

html tidy

- special section heading object numbering:
  - level B title numbered
  - level 1 title not numbered

- fix special sections eat other special sections,
  e.g. glossary eats bibliography & other headings
- glossary stop object numbering on empty lines
- glossary remove indent markup instruction
- bibliography provide missing heading