From http://www.jwz.org/xscreensaver/xscreensaver-5.30.tar.gz

[xscreensaver] / hacks / config / glschool.xml

diff --git a/hacks/config/glschool.xml b/hacks/config/glschool.xml
index 8ca0211d903419887cabab70cceb9f3bff83aa67..161f10e2ba0bf6d4109bc9819de5b18272042859 100644 (file)
--- a/hacks/config/glschool.xml
+++ b/hacks/config/glschool.xml
@@ -31,8 +31,10 @@
  <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
  </hgroup>
 
+  <xscreensaver-updater />
+
  <_description>
-Uses Craig Reynolds' classic "Boids" algorithm to simulate a school of fish.
+A school of fish, using the classic "Boids" algorithm by Craig Reynolds.
 
 http://en.wikipedia.org/wiki/Boids