anchor.diff:  |===
   |Key |Value Type |Example
   
  -3+|*Key Prefix:* ulist-marker-<type>^[1]^
  +3+|[#key-prefix-ulist-marker-type]*Key Prefix:* <<key-prefix-ulist-marker-type,ulist-marker-<type>{zwsp}>>^[1]^
   
   |content
   |<<quoted-string,Quoted string>>
  
positive.code:   label:
      text-transform: lowercase
  
  3+|[#key-prefix-admonition-icon]*Key Prefix:* <<key-prefix-admonition-icon,admonition-icon-<name> >>^[2]^
  
  |name
  |<icon set>-<icon name>^[3]^ +
  
negative.code: |toc:
    margin-top: 0
  
  3+|[#key-prefix-toc-level]*Key Prefix:* <<key-prefix-toc-level,toc-h<n>{zwsp}>>^[1]^
  
  |font-color
  |<<colors,Color>> +
  