Variable: gnus-article-edit-mode-map

C-M-i        ispell-complete-word
C-a          message-beginning-of-line(var)/message-beginning-of-line(fun)
C-c ?        describe-mode
C-c C-a      mml-attach-file
C-c C-b      message-goto-body
C-c C-c      gnus-article-edit-done
C-c C-e      message-elide-region
C-c C-f C-a  message-generate-unsubscribed-mail-followup-to
C-c C-f C-b  message-goto-bcc
C-c C-f C-c  message-goto-cc
C-c C-f C-d  message-goto-distribution
C-c C-f C-f  message-goto-followup-to
C-c C-f C-k  message-goto-keywords
C-c C-f C-n  message-goto-newsgroups
C-c C-f C-o  message-goto-from
C-c C-f C-r  message-goto-reply-to
C-c C-f C-s  message-goto-subject
C-c C-f C-t  message-goto-to
C-c C-f C-u  message-goto-summary
C-c C-f RET  message-goto-mail-followup-to
C-c C-f TAB  message-insert-or-toggle-importance
C-c C-f d    gnus-diary-check-message
C-c C-k      gnus-article-edit-exit
C-c C-n      message-insert-newsgroups
C-c C-o      message-sort-headers
C-c C-t      message-insert-to
C-c C-v      message-delete-not-region
C-c C-w f    gnus-article-edit-full-stops
C-c C-z      message-kill-to-signature
C-c TAB      message-goto-signature
M-;          comment-region
M-RET        message-newline-and-reformat
TAB          message-tab