<command arg="-root"/>
+ <video href="https://www.youtube.com/watch?v=NhKmipo_Ek4"/>
+
<hgroup>
<vgroup>
The converse is often, but not always, true. The coloration
reflects this.
-http://en.wikipedia.org/wiki/Hilbert_curve
+https://en.wikipedia.org/wiki/Hilbert_curve
Written by Jamie Zawinski; 2011.
</_description>