anchor.diff:  ---------------
   
   Kak was designed from the start to handle multiple selections.
  -One way to get a multiselection is via the _s_ key.
  +One way to get a multiselection is via the +s+ key.
   
   For example, to change all occurences of word 'roger' to word 'marcel'
   in a paragraph, here is what can be done:
   
  -select the paragraph with enough _x_. press _s_ and enter roger then enter.
  +select the paragraph with enough +x+. press +s+ and enter roger then enter.
   now paragraph selection was replaced with multiselection of each roger in
  -the paragraph. press _c_ and marcel<esc> to replace rogers with marcels.
  -
  -A multiselection can also be obtained with _S_, which splits the current
  +the paragraph. press +c+ and marcel<esc> to replace rogers with marcels.
  +
  +A multiselection can also be obtained with +S+, which splits the current
   selection according to the regex entered. To split a comma separated list,
  -use _S_ then ', *'
  -
  -_s_ and _S_ share the search pattern with _/_, and hence entering an empty
  +use +S+ then ', *'
  +
  ++s+ and +S+ share the search pattern with +/+, and hence entering an empty
   pattern uses the last one.
   
  -As a convenience, _alt-s_ allows you to split the current selections on
  +As a convenience, +alt-s+ allows you to split the current selections on
   line boundaries.
   
  -To clear multiple selections, use _space_. To keep only the nth selection
  -use _n_ followed by _space_, in order to remove a selection, use _alt-space_.
  -
  -_alt-k_ allows you to enter a regex and keep only the selections that
  -contains a match for this regex. using _alt-K_ you can keep the selections
  +To clear multiple selections, use +space+. To keep only the nth selection
  +use +n+ followed by +space+, in order to remove a selection, use +alt-space+.
  +
  ++alt-k+ allows you to enter a regex and keep only the selections that
  +contains a match for this regex. using +alt-K+ you can keep the selections
   not containing a match.
   
  -_C_ copies the current selection to the next line (or lines if a count is given)
  -_alt-C_ does the same to previous lines.
  -
  -_$_ allows you to enter a shell command and pipe each selections to it.
  ++C+ copies the current selection to the next line (or lines if a count is given)
  ++alt-C+ does the same to previous lines.
  +
  ++$+ allows you to enter a shell command and pipe each selections to it.
   Selections whose shell command returns 0 will be kept, other will be dropped.
   
   Object Selection
  
positive.code: 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
  
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
  