<command arg="-root"/>
- <video href="http://www.youtube.com/watch?v=AFtxL6--lTQ"/>
+ <video href="https://www.youtube.com/watch?v=AFtxL6--lTQ"/>
<hgroup>
<vgroup>
The rotations are chosen randomly. See also the "Rubik",
"RubikBlocks" and "GLSnake" screen savers.
-http://en.wikipedia.org/wiki/Square_One_%28puzzle%29
+https://en.wikipedia.org/wiki/Square_One_%28puzzle%29
Written by Vasek Potocek; 2005.
</_description>