<_description>
Hyperball is to hypercube as dodecahedron is to cube: this displays
a 2D projection of the sequence of 3D objects which are the projections
-of the 4D analog to the dodecahedron. Written by Joe Keane.
+of the 4D analog to the dodecahedron. Technically, it is a "120 cell
+polytope." Written by Joe Keane.
+
+See also the "polytopes" hack for a more general version of this
+using OpenGL.
</_description>
</screensaver>