mh-compose-insertion
mh-compose-insertion is an interactive autoloaded compiled Lisp function in `mh-mime.el
'.
(mh-compose-insertion &optional INLINE)
Add tag to include a file such as an image or sound.
You are prompted for the filename containing the object, the
media type if it cannot be determined automatically, and a
content description. If you're using MH-style directives, you
will also be prompted for additional attributes.
The option `mh-compose-insertion' controls what type of tags are
inserted. Optional argument INLINE means make it an inline
attachment.