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Requirements of an editor for Kui Yo to use
===========================================

FORMAT
------

Let's say I want to require the editor to have the key-binding that
runs command F by pressing key K.  Then just write as follows.

- key: "K" => "F"

Now one might not know the name of the command in need.  So one can
"define" a command by a description, as follows.

- def: "F" <= DESCRIPTION



EXAMPLE
-------

An example is easier to understand.  Suppose I want that pressing "C-x
m", which means "control-x m", has the effect of copying the current
line and pasting it below the current line.  Then I can write:

- def: "copy line below" <= copying the current line and pasting it
       below the current line
- key: "C-x m" => "copy line below"



REQUIREMENTS
------------

Now let's start the journey.

Test

- def: "copy line below" <= copying the current line and pasting it
       below the current line
       
- def: "yank" <= The terminology for "paste" in Emacs

- def: "undo-only" <= Only undo changes made by the user, not changes
  introduced by previous undo'es

- key: "C-x" => "kill-region"

- key: "C-c" => "kill-ring-save"

- key: "C-v" => "yank"

- key: "C-z" => "undo-only"