From http://www.jwz.org/xscreensaver/xscreensaver-5.16.tar.gz

[xscreensaver] / hacks / config / penrose.xml

diff --git a/hacks/config/penrose.xml b/hacks/config/penrose.xml
index 7ed67937398f33a32930068e5f0925bb10056ab8..c298dd5e5c957d1f21bcefa3f9d996d2d9e73ef7 100644 (file)
--- a/hacks/config/penrose.xml
+++ b/hacks/config/penrose.xml
@@ -45,6 +45,7 @@ stand must be taken."
 As reported by News of the Weird #491, 4-Jul-1997.
 
 http://en.wikipedia.org/wiki/Penrose_tiling
+http://en.wikipedia.org/wiki/Tessellation
 
 Written by Timo Korvola; 1997.
   </_description>