anchor.diff:  Most selection commands also support counts, which are entered before the
   command itself.
   
  -for example, _3W_ selects 3 consecutive words and _3w_ select the third word on
  +for example, +3W+ selects 3 consecutive words and +3w+ select the third word on
   the right of selection end.
   
   Changes
  
positive.code: Some commands, all begining with v permit to manipulate the current
  view.
  
   * +vv+ or _vc_: center the main selection in the window
   * +vt+: scroll to put the main selection on the top line of the window
   * +vb+: scroll to put the main selection on the bottom line of the window
   * +vh+: scroll the window count columns left
  
negative.code:  * +gh+: select to line begin
   * +gl+: select to line end
  
   * +gg+, +gk+: go to the first line
   * +gj+: go to the last line
  
   * +gt+: go to the first displayed line
  