GNA SCHEME LICENSE

The following license applies to code developed by the Globewide Network 
Academy which is not covered under another open source license.  Please
contact gna@gnacademy.org if you have any questions.

This material was developed by the Globewide Network
Academy. Permission to copy and modify this software, to redistribute
either the original software or a modified version, and to use this
software for any purpose is granted, subject to the following
restrictions and understandings.

1. Any copy made of this software must include this copyright notice
   in full.

2. Users of this software agree to make their best efforts (a) to
   return to GNA any improvements or extensions that they make, so
   that these may be included in future releases; and (b) to inform
   GNA of noteworthy uses of this software.

3. All materials developed as a consequence of the use of this
   software shall duly acknowledge such use, in accordance with the
   usual standards of acknowledging credit in academic research.

4. In conjunction with products arising from the use of this material,
   there shall be no use of the name of the Globewide Network Academy
   nor of any adaptation thereof in any advertising, promotional, or
   sales literature without prior written consent from GNA in each
   case.

5. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO
   WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE
   LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS
   AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
   OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND
   PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE PROGRAM PROVE
   DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR
   OR CORRECTION.

6. WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
   REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
   DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
   CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
   THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA
   BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
   PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
   PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF
   THE POSSIBILITY OF SUCH DAMAGES.