-! Note that those hacks (gears, superquadratics, morph3d, escher, pipes,
-! sproingies, and rubik) tend to work best on a visual *half* as deep as the
-! depth of the screen, since that way, they can do double-buffering -- try it
-! and see, but you will probably find that you should specify the deepest
-! visual that is half as deep as the screen.
+! Note that those hacks (gears, superquadratics, morph3d, cage, moebius,
+! stairs, pipes, sproingies, and rubik) tend to work best on a visual *half*
+! as deep as the depth of the screen, since that way, they can do
+! double-buffering -- try it and see, but you will probably find that you
+! should specify the deepest visual that is half as deep as the screen.