** Highlight rectangles (`mouse-track-rectangle-p' in XEmacs). Already in CUA,
but it's a valuable feature worth making more general.
-** Support simultaneous tty and X frames.
+** Support simultaneous tty and X frames. [For a partial
+ implementation, see tla branch
+ lorentey@elte.hu--2004/emacs--multi-tty--0 at
+ http://lorentey.hu/arch/2004]
** Provide MIME support for Rmail using the Gnus MIME library. [Maybe
not now feasible, given Gnus maintenance decisions. fx looked at