mh-goto-next-button

mh-goto-next-button is an autoloaded compiled Lisp function in `mh-mime.el'.

(mh-goto-next-button BACKWARD-FLAG &optional CRITERION)

Search for next button satisfying criterion.

If BACKWARD-FLAG is non-nil search backward in the buffer for a mime
button.
If CRITERION is a function or a symbol which has a function binding
then that function must return non-nil at the button we stop.