mutt: Mention under the key bindings documentation.

[Brendan Cully]

changeset: 6554:e8f7a08cb7ac
user:      Kevin McCarthy <ke...@8t8.us>
date:      Tue Jan 26 13:46:22 2016 -0800
link:      http://dev.mutt.org/hg/mutt/rev/e8f7a08cb7ac

Mention <what-key> under the key bindings documentation.

diffs (17 lines):

diff -r df42596d08fe -r e8f7a08cb7ac doc/manual.xml.head
--- a/doc/manual.xml.head       Sat Jan 23 12:30:16 2016 -0800
+++ b/doc/manual.xml.head       Tue Jan 26 13:46:22 2016 -0800
@@ -2378,6 +2378,13 @@
 </table>
 
 <para>
+The <literal>&lt;what-key&gt;</literal> function can be used to
+explore keycode and symbolic names for other keys on your keyboard.
+Executing this function will display information about each key
+pressed, until terminated by <literal>^G</literal>.
+</para>
+
+<para>
 <emphasis>key</emphasis> does not need to be enclosed in quotes unless
 it contains a space (<quote>&nbsp;</quote>) or semi-colon
 (<quote>;</quote>).