<command arg="-root"/>
+ <video href="https://www.youtube.com/watch?v=rHY8dR1urQk"/>
+
<hgroup>
<vgroup>
<number id="delay" type="slider" arg="-delay %"
A gear system marches across the screen.
See also the "Gears" and "MoebiusGears" screen savers.
-http://en.wikipedia.org/wiki/Involute_gear
+https://en.wikipedia.org/wiki/Involute_gear
Written by Jamie Zawinski; 2004.
</_description>