the cancel message. The default is @samp{I am canceling my own
article.}.
+@cindex Cancel Locks
+@vindex message-insert-canlock
+@cindex canlock
+When Message posts news messages, it inserts @code{Cancel-Lock}
+headers by default. This is a cryptographic header that ensures that
+only you can cancel your own messages, which is nice. The downside
+is that if you lose your @file{.emacs} file (which is where Gnus
+stores the secret cancel lock password (which is generated
+automatically the first time you use this feature)), you won't be
+able to cancel your message.
+
+Whether to insert the header or not is controlled by the
+@code{message-insert-canlock} variable.
+
+Not many news servers respect the @code{Cancel-Lock} header yet, but
+this is expected to change in the future.
+
@node Superseding
@section Superseding
@kindex M-x message-insert-importance-high
@findex message-insert-importance-high
@cindex Importance
-Insert an @samp{Importance:} header with a value of @samp{high},
+Insert an @samp{Importance} header with a value of @samp{high},
deleting headers if necessary.
@item M-x message-insert-importance-low
@kindex M-x message-insert-importance-low
@findex message-insert-importance-low
@cindex Importance
-Insert an @samp{Importance:} header with a value of @samp{low}, deleting
+Insert an @samp{Importance} header with a value of @samp{low}, deleting
headers if necessary.
@item C-c C-f s
@kindex C-c C-f s
@findex message-change-subject
@cindex Subject
-Change the current @samp{Subject:} header. Ask for new @samp{Subject:}
+Change the current @samp{Subject} header. Ask for new @samp{Subject}
header and append @code{(was: <Old Subject>)}. The old subject can be
stripped on replying, see @code{message-subject-trailing-was-query}
(@pxref{Message Headers}).
@vindex message-cross-post-default
@cindex X-Post
@cindex cross-post
-Ask for an additional @samp{Newsgroups:} and @samp{FollowUp-To:} for a
+Ask for an additional @samp{Newsgroups} and @samp{FollowUp-To} for a
cross-post. @code{message-cross-post-followup-to} mangles
-@samp{FollowUp-To:} and @samp{Newsgroups:} header to point to group.
+@samp{FollowUp-To} and @samp{Newsgroups} header to point to group.
If @code{message-cross-post-default} is @code{nil} or if called with a
-prefix-argument @samp{Follow-Up:} is set, but the message is not
+prefix-argument @samp{Follow-Up} is set, but the message is not
cross-posted.
@item C-c C-f t
@kindex C-c C-f t
@findex message-reduce-to-to-cc
-Replace contents of @samp{To:} header with contents of @samp{Cc:} or
-@samp{Bcc:} header.
+Replace contents of @samp{To} header with contents of @samp{Cc} or
+@samp{Bcc} header.
+
+@item C-c C-f w
+@kindex C-c C-f w
+@findex message-insert-wide-reply
+Insert @samp{To} and @samp{Cc} headers as if you were doing a wide
+reply.
@item C-c C-f a
@kindex C-c C-f a