* doc/lispref/keymaps.texi (Remapping Commands): Mention how to undo it.

doc/lispref/ChangeLog

+2011-02-18  Glenn Morris  <rgm@gnu.org>
+
+	* keymaps.texi (Remapping Commands): Mention how to undo it.
+
 2011-02-05  Chong Yidong  <cyd@stupidchicken.com>
 
 	* commands.texi (Accessing Mouse): Note that a header line is not

doc/lispref/keymaps.texi

@@ -1510,6 +1510,12 @@ does not have the effect of remapping @code{kill-line} into
 if an ordinary binding specifies @code{my-kill-line}, this keymap will
 remap it to @code{my-other-kill-line}.
 
+To undo the remapping of a command, remap it to @code{nil}; e.g.
+
+@smallexample
+(define-key my-mode-map [remap kill-line] nil)
+@end smallexample
+
 @defun command-remapping command &optional position keymaps
 This function returns the remapping for @var{command} (a symbol),
 given the current active keymaps.  If @var{command} is not remapped