From http://www.jwz.org/xscreensaver/xscreensaver-5.40.tar.gz
[xscreensaver] / hacks / glx / glschool.man
2014-05-30 Zygo BlaxellFrom jwz.org/xscreensaver/xscreensaver-5.25.tar.gz
2013-12-09 Zygo BlaxellFrom jwz.org/xscreensaver/xscreensaver-5.24.tar.gz
2013-02-08 Zygo Blaxellwww.jwz.org/xscreensaver/xscreensaver-5.07.tar.gz
2013-02-08 Zygo Blaxellslackware.bholcomb.com/slackware/slackware-11.0/source...