Status of 'flight' source

[Steve Hayman]

I recently came across a version of 'flight', 'dog' et al that had
been ported to Suns.  It runs reasonably well on a colour GX Sparcstation
although it doesn't fill the polygons so a lot of the realism is lost.  

Whoever did this port (there is no author listed in the code)
implemented a simple library to emulate SGI graphics.  The rest
of the source seems to be the real 'flight' source.

I'm sure that this would be an extremely popular program if
I were to install it on our public Sparcstation cluster.
What disturbs me is comments like this in the original source:

    /**************************************************************************
     *                                                                        *
     *               Copyright (C) 1983, Silicon Graphics, Inc.               *
     *                                                                        *
     *  These coded instructions, statements, and computer programs  contain  *
     *  unpublished  proprietary  information of Silicon Graphics, Inc., and  *
     *  are protected by Federal copyright law.  They  may  not be disclosed  *
     *  to  third  parties  or copied or duplicated in any form, in whole or  *
     *  in part, without the prior written consent of Silicon Graphics, Inc.  *
     *                                                                        *
     **************************************************************************/


Does anybody know whether this source really is something that
can be distributed?  I'm a strong believer in copyright protection
and don't want to install this if the code really is proprietary.

Thanks for any advice.  Please respond by mail and I'll summarize.

Steve

-- 
Steve Hayman    Workstation Manager    Computer Science Department   Indiana U.
sahayman at iuvax.cs.indiana.edu                                    (812) 855-6984