anchor.diff:   * `alt-&`: copy indent, copy the indentation of the main selection
           (or the count one if a count is given) to all other ones
   
  - * ```: to lower case
  + * ` ` `: to lower case
    * `~`: to upper case
    * `alt-``: swap case
   
  
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:             in place of line breaks
  
   * `>`: indent selected lines
   * `alt->`: indent selected lines, including empty lines
   * `<`: deindent selected lines
   * `alt-<`: deindent selected lines, do not remove incomplete
  