anchor.diff:              in place of line breaks
   
    * `>`: indent selected lines
  - * `<`: deindent selected lines
    * `alt->`: indent selected lines, including empty lines
    * `<`: deindent selected lines
    * `alt-<`: deindent selected lines, do not remove incomplete
  
positive.code:  * `a`, `<` or `>`: select the enclosing <> block
   * `"`: select the enclosing double quoted string
   * `'`: select the enclosing single quoted string
   * ```: select the enclosing grave quoted string
   * `w`: select the whole word
   * `W`: select the whole WORD
   * `s`: select the sentence
  
negative.code: :rmhl <highlighter_id>
  ----------------------
  
  `highlighter_id` is a name generated by the highlighter specified with `highlighter_name`,
  possibly dependent on the parameters. Use command completion on rmhl to see the existing
  highlighters id.
  
  general highlighters are:
  
   * `regex <ex> <capture_id>:<face>...`: highlight a regex, takes the regex as
  