anchor.diff:  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
  - * _vj_: scroll the window count line downward
  - * _vk_: scroll the window count line upward
  - * _vl_: scroll the window count columns right
  + * +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
  + * +vj+: scroll the window count line downward
  + * +vk+: scroll the window count line upward
  + * +vl+: scroll the window count columns right
   
   Jump list
   ---------
  
positive.code: 
  Some keys allow you to select a text object:
  
   * _alt-a_: selects the whole object
   * _alt-i_: selects the inner object, that is the object excluding it's surrounder.
              for example, for a quoted string, this will not select the quote, and
              for a word this will not select trailing spaces.
   * _[_: selects to object start
   * _]_: selects to object end
   * _{_: extends selections to object start
   * _}_: extends selections to object end
  
  After this key, you need to enter a second key in order to specify which
  object you want.
  
   * _b_, _(_ or _)_: select the enclosing parenthesis
   * _B_, _{_ or _}_: select the enclosing {} block
   * _r_, _[_ or _]_: select the enclosing [] block
   * _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
   * _p_: select the paragraph
   * _␣_: select the whitespaces
   * _i_: select the current indentation block
   * _n_: select the number
  
  For nestable objects, a count can be used in order to specify which surrounding
  level to select.
  
negative.code: push the previous selections to the client's jump list. It is possible
  to forward or backward in the jump list using:
  
   * +control-i+: Jump forward
   * +control-o+: Jump backward
   * +control-s+: save current selections
  
  Multi Selection
  ---------------
  