A Steroid is Copyright 1999-2000 by Paolo Cignoni.
All rights reserved.
You can find the most updated version at:
http://vcg.iei.pi.cnr.it/~cignoni/a_steroid/index.html

Permission to copy and distribute 'A Steroid' in its entirety, for didactic 
non-commercial purposes, is hereby granted without fee, provided that this 
license information and copyright notice appear in all copies.
The author will appreciate the communication of the use of this material in 
didactic courses. 
If you redistribute A Steroid, the entire contents of this distribution must be
distributed.

The software may be modified for your own purposes, but modified versions may
not be distributed without prior consent of the author. 

This software is provided 'as-is', without any express or implied warranty.  In
no event will the author be held liable for any damages arising from the use of
this software.

If you would like to do something with A Steroid that this copyright prohibits
(such as distributing it with a commercial product, using portions of the source
in some other program, distributing registered copies, etc.), please contact the
author (cignoni@iei.pi.cnr.it).  Arrangements can probably be worked out.

Author Contact info:
Paolo Cignoni
cignoni@iei.pi.cnr.it
http://vcg.iei.pi.cnr.it/~cignoni/