<command arg="-root"/>
- <video href="http://www.youtube.com/watch?v=6j2H2gL8cws"/>
+ <video href="https://www.youtube.com/watch?v=6j2H2gL8cws"/>
<boolean id="identical" _label="Identical pieces" arg-set="-identical"/>
Repeatedly attempts to completely fill a rectangle with
irregularly-shaped puzzle pieces.
-http://en.wikipedia.org/wiki/Polyomino
+https://en.wikipedia.org/wiki/Polyomino
Written by Stephen Montgomery-Smith; 2002.
</_description>