anchor.diff:  3+|[#key-prefix-toc-dot-leader]*Key Prefix:* <<key-prefix-toc-dot-leader,toc_dot_leader>>
   
   |content
  -|Quoted string +
  +|<<quoted-string,Quoted string>> +
   (default: '. ')
   |toc:
     dot_leader:
  
positive.code:     columns: <50% =0% <50%
  
  |<side>_<position>_content^[3,4]^
  |Quoted string
  |footer:
    verso:
      center:
  
negative.code: 3+|[#key-prefix-authors]*Key Prefix:* <<key-prefix-authors,title_page_authors>>
  
  |delimiter
  |<<quoted-string,Quoted string>> +
  (default: ', ')
  |title_page:
    revision:
  