gnus-summary-post-news
gnus-summary-post-news is an interactive autoloaded compiled Lisp function in `gnus-msg.el
'.
(gnus-summary-post-news &optional ARG)
Start composing a message. Post to the current group by default.
If ARG, don't do that. If ARG is 1, prompt for a group name to post to.
Depending on the selected group, the message might be either a mail or
a news.