allows specifying how messages are to be sent. For example:
X-Message-SMTP-Method: smtp smtp.fsf.org 587
+
+** Gnus keeps track of non-existent articles for nnimap groups, so
+ that sparse IMAP folders now list a correct number of messages in
+ them.
+
+** Gnus will guess the real type of MIME parts of type
+ application/octet-stream based on the file suffix. So an
+ application/octet-stream with a name of "rms.jpg" will be displayed
+ as an image/jpeg type by default, for instance.
* For older news, see Gnus info node "New Features".