<command arg="-root"/>
- <video href="http://www.youtube.com/watch?v=F1qna7UAxC0"/>
+ <video href="https://www.youtube.com/watch?v=F1qna7UAxC0"/>
<number id="delay" type="slider" arg="-delay %"
_label="Frame rate" _low-label="Low" _high-label="High"
<_description>
Strange attractors: a swarm of dots swoops and twists around.
-http://en.wikipedia.org/wiki/Attractor#Strange_attractor
+https://en.wikipedia.org/wiki/Attractor#Strange_attractor
Written by Massimino Pascal; 1997.
</_description>