*<Leader>* *mapleader*

To define a mapping which uses the "mapleader" variable, the special string
"<Leader>" can be used.  It is replaced with the string value of "mapleader".
If "mapleader" is not set or empty, a backslash is used instead.  Example: >
        :map <Leader>A  oanother line<Esc>
Works like: >
        :map \A  oanother line<Esc>
But after: >
        :let mapleader = ","
It works like: >
        :map ,A  oanother line<Esc>

Note that the value of "mapleader" is used at the moment the mapping is
defined.  Changing "mapleader" after that has no effect for already defined
mappings.


                                        *<LocalLeader>* *maplocalleader*
<LocalLeader> is just like <Leader>, except that it uses "maplocalleader"
instead of "mapleader".  <LocalLeader> is to be used for mappings which are
local to a buffer.  Example: >
      :map <LocalLeader>q  \DoItNow