+** Message supports the Importance: header.
+
+In the message buffer, C-c C-p cycles through the valid values.
+
+** Gnus supports Cancel Locks in News.
+
+This means a header "Cancel-Lock" is inserted in news posting. It is
+used to determine if you wrote a article or not (for
+cancelling/superseding). The behaviour can be changed by customizing
+`message-insert-canlock'.
+
+** Gnus supports server-side mail filtering using Sieve.
+
+Sieve rules can be added as Group Parameters for groups, and the
+complete Sieve script is generated using `D g' from the Group buffer,
+and then uploaded to the server using `C-c C-l' in the generated Sieve
+buffer. Search the online Gnus manual for "sieve", and see the new
+Sieve manual, for more information.
+
+** Extended format specs.
+
+Format spec "%&user-date;" is added into
+gnus-summary-line-format-alist. Also, user defined extended format
+specs are supported. The extended format specs look like "%u&foo;",
+which invokes function gnus-user-format-function-foo. Because "&" is
+used as the escape character, old user defined format "%u&" is no
+longer supported.
+