gnus-summary-reply
gnus-summary-reply is an interactive autoloaded compiled Lisp function in `gnus-msg.el
'.
(gnus-summary-reply &optional YANK WIDE VERY-WIDE)
Start composing a mail reply to the current message.
If prefix argument YANK is non-nil, the original article is yanked
automatically.
If WIDE, make a wide reply.
If VERY-WIDE, make a very wide reply.