The Perl Toolchain Summit needs more sponsors. If your company depends on Perl, please support this very important event.
These are Stan's original examples. Not all will work with all X/OpenGL depths.

Additionally, there is a planets demo (based on an article in EPM/2) by
Ilya Zakharevich.  The articles explains how to build the demo step by step.
Different steps are available via the supplied RCS file.