So "Describe" is unnecessarily duplicated.

> Similar problem exists when one uses tmm (e.g., on a tty).

This is rather a failure of tmm.  It doesn't display the full path
to the current submenu.  It would be useful to implement this.
And shorter menu names are much better for tmm to occupy less space
in its completion buffer.

-- 
Juri Linkov
http://www.jurta.org/emacs/