message-cross-post-insert-note

message-cross-post-insert-note is a compiled Lisp function in `message.el'.

(message-cross-post-insert-note TARGET-GROUP CROSS-POST IN-OLD OLD-GROUPS)

Insert a in message body note about a set Followup or Crosspost.
If there have been previous notes, delete them. TARGET-GROUP specifies the
group to Followup-To. When CROSS-POST is t, insert note about
crossposting. IN-OLD specifies whether TARGET-GROUP is a member of
OLD-GROUPS. OLD-GROUPS lists the old-groups the posting would have
been made to before the user asked for a Crosspost.