+@node MIME
+@section MIME
+@cindex MML
+@cindex MIME
+@cindex multipart
+@cindex attachment
+
+Message is a @sc{mime}-compliant posting agent. The user generally
+doesn't have to do anything to make the @sc{mime} happen---Message will
+automatically add the @code{Content-Type} and
+@code{Content-Transfer-Encoding} headers.
+
+The most typical thing users want to use the multipart things in
+@sc{mime} for is to add ``attachments'' to mail they send out. This can
+be done with the @code{C-c C-a} command, which will prompt for a file
+name and a @sc{mime} type.
+
+You can also create arbitrarily complex multiparts using the MML
+language (@pxref{Composing, , Composing, emacs-mime, The Emacs MIME
+Manual}).
+