anchor.diff:      deindent selected lines, do not remove incomplete indent (3 leading
       spaces when indent is 4)
   
  -*|*::
  -    pipe each selection through the given external filter program and
  -    replace the selection with its output. Shell expansions are available,
  -    (See <<expansions#shell-expansions,`:doc expansions shell-expansions`>>)
  -
  -*<a-|>*::
  -    pipe each selection through the given external filter program and
  -    ignore its output. Shell expansions are available,
  -    (See <<expansions#shell-expansions,`:doc expansions shell-expansions`>>)
  -
  -*!*::
  -    insert command output before each selection. Shell expansions are available,
  -    (See <<expansions#shell-expansions,`:doc expansions shell-expansions`>>)
  -
  -*<a-!>*::
  -    append command output after each selection. Shell expansions are available,
  -    (See <<expansions#shell-expansions,`:doc expansions shell-expansions`>>)
  -
   *u*::
       undo last change
   
  
positive.code:     repeat last object or *f*/*t* selection command
  
  == Changes
  
  *i*::
      enter insert mode before selections
  
negative.code:     save selections
  
  == Multiple selections
  
  *s*, *S*, *<a-k>* and *<a-K>* use the */* register by default (See <<registers#,`:doc registers`>>)
  
  *s*::
      create a selection for each match of the given regex
  