Commit 617f06a8 authored by Richard M. Stallman's avatar Richard M. Stallman
Browse files

(Function Keys): Document kp- event types and keypad-setup package.

parent ff994d96
......@@ -1636,6 +1636,27 @@ word:
(global-set-key [H-M-right] 'forward-word)
@end example
@cindex keypad
Many keyboards have a ``numeric keypad'' on the right hand side.
The numeric keys in the keypad double up as cursor motion keys,
toggled by a key labelled @samp{Num Lock}. By default, Emacs
translates these keys to the corresponding keys in the main keyboard
(@pxref{Keyboard Translations}). For example, when @samp{Num Lock} is
on, the key labelled @samp{8} on the numeric keypad produces
@code{kp-8}, which is translated to @kbd{8}; when @samp{Num Lock} is
off, the same key produces @code{kp-up}, which is translated to
@key{UP}. If you rebind a key such as @kbd{8} or @key{UP}, it affects
the equivalent keypad key too. However, if you rebind a @samp{kp-}
key directly, that won't affect its non-keypad equivalent.
Emacs provides a convenient method for binding the numeric keypad
keys, using the variables @code{keypad-setup},
@code{keypad-numlock-setup}, @code{keypad-shifted-setup}, and
@code{keypad-numlock-shifted-setup}. These can be found in the
@samp{keyboard} customization group (@pxref{Easy Customization}). You
can rebind the keys to perform other tasks, such as issuing numeric
prefix arguments.
@node Named ASCII Chars
@subsection Named @acronym{ASCII} Control Characters
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