* doc/emacs/rmail.texi (Rmail Deletion): Document new behavior of 'u'
with numeric argument.
effect of a @kbd{d} command in most cases. It undeletes the current
message if the current message is deleted. Otherwise it moves backward
to previous messages until a deleted message is found, and undeletes
-that message.
+that message. A numeric prefix argument serves as a repeat count, to
+allow deletion of several messages in a single command.
You can usually undo a @kbd{d} with a @kbd{u} because the @kbd{u}
moves back to and undeletes the message that the @kbd{d} deleted. But
** Rmail
+++
-*** The Rmail commands d, C-d and u take optional repeat counts to delete or
-undelete multiple messages.
+*** The Rmail commands `d', `C-d' and `u' take optional repeat counts
+to delete or undelete multiple messages.
+++
*** Rmail can now render HTML mail messages if your Emacs was built with