-Packs a large circle with smaller circles, demonstrating the
-Descartes Circle Theorem. Written by Allan R. Wilks and David Bagley.
+Draws an Apollonian gasket: a fractal packing of circles with
+smaller circles, demonstrating Descartes's theorem.
+
+http://en.wikipedia.org/wiki/Apollonian_gasket
+http://en.wikipedia.org/wiki/Descartes%27_theorem
+
+Written by Allan R. Wilks and David Bagley; 2002.