Window commands are:

	window open left top width height title
		create the specified window, set up a null menu strip, add
		the window to the interpreter's window list (handled through
		the clientdata structure -- no changes were made to the
		interpreter to support this), make it the current window,
		and return a window handle

	window close windowhandle
		close the specified window, remove it from the window list,
		discard its menu list, etc, etc

	window limits windowhandle minwidth minheight maxwidth maxheight
		set new max and min size limits for the specified window

	window title windowhandle  newtitle
		set the titles for the window (buggy)

	window front windowhandle 
		move the specified window to the front

	window back windowhandle 
		move the specified window to the back

	window move windowhandle  deltax deltay
		move the specified window by delta

	window size windowhandle  deltax deltay
		resize the specified window

	window current windowhandle 
		make the specified window the current window (for the display
		command)

	window blank windowhandle 
		blanks the specified window draw area, more or less

	window width windowhandle
		returns the width of the specified window

	window height windowhandle
		returns the height of the specified window


BUGS

titles don't work right