Ygl emulates SGI's GL (Graphics Language) library under X11. It runs fine under AIX 3.2, HP-UX 7.0/8.0/9.0, GNU/Linux with XFree, SunOS, ConvexOS and many others. ygl is available via anonymous FTP from ftp.thp.Uni-Duisburg.DE [], in /pub/source/X11/Ygl-x.x.tar.gz. Information is available on the World Wide Web at the URL //www.thp.uni-duisburg.de/Ygl/ As of 2002-04-26, a new version (4.1) of Ygl is available.