24apr93	menu.c		
	box.c
	scene.c

6jun93	menu.c		In the RSL browser application, where empty pulldown
			menu bodies are used, there was a problem that was
			evidently due to this.  The problem boiled down to the
			following line (originally line 344) blowing up in
			X11-inter.c:GetRelative:

	XTranslateCoordinates(
	    _world->display(), (Window)canvas->id, (Window)w->canvas->id,
	    x, ymax - y, &rx, &ry, &child
	);

			The specific cause of the problem is that canvas is
			nil.  This occured when GetRelative was called from
			Menu::Close, when the menu has an empty body.  To avoid
			the problem, the following guard was put around the
			call to GetRelative in Menu::Close

			    if (action->canvas != nil)

			This specifically avoids calling GetRelative with a
			null canvas that will subsequently cause GetRelative to
			blow up.

			The details of how action is being used here are not at
			all clear, but the fix does correct the specific
			problem in the rbrowse application, and the fix seems
			to be otherwise appropriate.

26oc95	rubrect.c	Added GetTrackAngle to return total number of degrees
			moved during a RotatingRect::Track.  Added computation
			at end of Track function to accumulate total angle.