2002-01-21  Jody Goldberg <jody@gnome.org>

	* src/item-acetate.c : trivial new object to provide a rectangle with
	  clear interiors that still collects events.

	* src/sheet-control-gui.c (set_item_x_y) : optionally hide a point.
	(scg_object_update_bbox) : hide middle control points when the bounds
	  are too close together.
	(set_acetate_coords) : use new simpler item-acetate, and provide a
	  cute stipple to make things clearer.