From http://www.jwz.org/xscreensaver/xscreensaver-5.35.tar.gz

[xscreensaver] / hacks / config / hypertorus.xml

diff --git a/hacks/config/hypertorus.xml b/hacks/config/hypertorus.xml
index a6218eab888a1844161e54ad6ca182b4371220f7..a82e090afd7e057aa9797372e15689a7e78f4cf7 100644 (file)
--- a/hacks/config/hypertorus.xml
+++ b/hacks/config/hypertorus.xml
@@ -4,6 +4,8 @@
 
   <command arg="-root"/>
 
+  <video href="https://www.youtube.com/watch?v=KJWe4G4Qa1Q"/>
+
   <hgroup>
   <number id="delay" type="slider" arg="-delay %"
           _label="Frame rate" _low-label="Low" _high-label="High"
@@ -105,9 +107,9 @@ Inspired by Thomas Banchoff's book "Beyond the Third Dimension:
 Geometry, Computer Graphics, and Higher Dimensions", Scientific
 American Library, 1990.
 
-http://en.wikipedia.org/wiki/N-sphere
-http://en.wikipedia.org/wiki/Clifford_torus
-http://en.wikipedia.org/wiki/Regular_polytope
+https://en.wikipedia.org/wiki/N-sphere
+https://en.wikipedia.org/wiki/Clifford_torus
+https://en.wikipedia.org/wiki/Regular_polytope
 
 Written by Carsten Steger; 2003.
   </_description>