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

[xscreensaver] / hacks / config / klein.xml

diff --git a/hacks/config/klein.xml b/hacks/config/klein.xml
index fb67c63c5588f7c286d00fdd3a879eed5a4ccec3..8a93c9e0e3ba9b81bfea54cad8ab46886a7d28d6 100644 (file)
--- a/hacks/config/klein.xml
+++ b/hacks/config/klein.xml
@@ -4,6 +4,8 @@
 
   <command arg="-root"/>
 
+  <video href="https://www.youtube.com/watch?v=c2gvyGVNG80"/>
+
   <hgroup>
     <select id="kleinbottle">
       <option id="random"         _label="Random shape"/>
@@ -115,14 +117,14 @@
   <xscreensaver-updater />
 
   <_description>
-This animates a Klein bottle, the 4D analog of a moebius strip.
+A Klein bottle is the 4D analog of a moebius strip.
 
 You can walk on the surface of the bottle or rotate it in 4D or walk
 on it while it rotates in 4D.  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/Klein_bottle
+https://en.wikipedia.org/wiki/Klein_bottle
 
 Written by Carsten Steger; 2008.
   </_description>