<_description>
Interlocking gears. See also the "Pinion" and "MoebiusGears" screen savers.
-http://en.wikipedia.org/wiki/Involute_gear
-http://en.wikipedia.org/wiki/Epicyclic_gearing
+https://en.wikipedia.org/wiki/Involute_gear
+https://en.wikipedia.org/wiki/Epicyclic_gearing
Written by Jamie Zawinski; 2007.
</_description>