bzflag License
Copyright (c) 1999 Chris Schoeneman

Redistribution and use in source and binary forms are permitted provided
that the following conditions are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

3. A reasonable fee may be charged to copy this software.  Any fee may
   be charged to support this software.  This software may be
   distributed as part of a larger (possibly commercial) software
   distribution provided that no claim of ownership of this software
   is made.  However, no fee may be charged for the software itself.

Modifications are permitted provided that the following conditions are
met:

1. Each modified source file must include a prominent notice stating
   how and when that file was changed.

2. Modified object or executable code must be accompanied by the
   modified source code and/or documentation clearly stating the
   modifications.  Modified executables must be renamed to not
   conflict with the standard names.

3. Redistribution and use of modified source and binary forms are
   permitted provided that at least one of the following conditions
   are met:

   A. Modifications are placed in the public domain or are
      made available under this license, or permission to use
      the modifications is granted to the Copyright Holder.

   B. Use of the modified version is restricted to within
      the corporation or organization that made the
      modifications.

   C. Other distribution arrangements are made with the
      Copyright Holder.

4. The name of the Copyright Holder may not be used to endorse or
   promote products derived from this software without specific prior
   written permission.

THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.