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

[xscreensaver] / hacks / config / surfaces.xml

diff --git a/hacks/config/surfaces.xml b/hacks/config/surfaces.xml
index da325f9c597f6e234aac7adeb20ef6ea8b68c2a6..92a184aecf1dbf386eb69d704be9b4318ea8082a 100644 (file)
--- a/hacks/config/surfaces.xml
+++ b/hacks/config/surfaces.xml
@@ -4,6 +4,8 @@
 
   <command arg="-root"/>
 
+  <video href="https://www.youtube.com/watch?v=Q412lxz3fTg"/>
+
   <hgroup>
    <vgroup>
     <number id="delay" type="slider" arg="-delay %"
@@ -52,17 +54,17 @@
   <xscreensaver-updater />
 
   <_description>
-This draws a visualization of several interesting parametric surfaces.
+Parametric surfaces.
 
 http://mathworld.wolfram.com/DinisSurface.html
-http://en.wikipedia.org/wiki/Enneper_surface
+https://en.wikipedia.org/wiki/Enneper_surface
 http://mathworld.wolfram.com/EnnepersMinimalSurface.html
 http://mathworld.wolfram.com/KuenSurface.html
-http://en.wikipedia.org/wiki/Moebius_strip
+https://en.wikipedia.org/wiki/Moebius_strip
 http://mathworld.wolfram.com/Seashell.html
 http://mathworld.wolfram.com/SwallowtailCatastrophe.html
 http://mathworld.wolfram.com/BohemianDome.html
-http://en.wikipedia.org/wiki/Whitney_umbrella
+https://en.wikipedia.org/wiki/Whitney_umbrella
 http://mathworld.wolfram.com/PlueckersConoid.html
 http://mathworld.wolfram.com/HennebergsMinimalSurface.html
 http://mathworld.wolfram.com/CatalansSurface.html