ACM Software License Agreement

All software, both binary and source published by the Association for
Computing Machinery (hereafter, Software) is copyrighted by the
Association (hereafter, ACM) and ownership of all right, title and
interest in and to the Software remains with ACM. By using or copying
the Software, User agrees to abide by the terms of this Agreement.


Noncommercial Use

The ACM grants to you (hereafter, User) a royalty-free, nonexclusive
right to execute, copy, modify and distribute both the binary and
source code solely for academic, research and other similar
noncommercial uses, subject to the following conditions:

1. User acknowledges that the Software is still in the development
stage and that it is being supplied "as is," without any support
services from ACM. Neither ACM nor the author makes any
representations or warranties, express or implied, including, without
limitation, any representations or warranties of the merchantability
or fitness for any particular purpose, or that the application of the
software, will not infringe on any patents or other proprietary rights
of others.

2. ACM shall not be held liable for direct, indirect, incidental or
consequential damages arising from any claim by User or any third
party with respect to uses allowed under this Agreement, or from any
use of the Software.

3. User agrees to fully indemnify and hold harmless ACM and/or the
author(s) of the original work from and against any and all claims,
demands, suits, losses, damages, costs and expenses arising out of the
User's use of the Software, including, without limitation, arising out
of the User's modification of the Software.

4. User may modify the Software and distribute that modified work to
third parties provided that: (a) if posted separately, it clearly
acknowledges that it contains material copyrighted by ACM (b) no
charge is associated with such copies, (c) User agrees to notify ACM
and the Author(s) of the distribution, and (d) User clearly notifies
secondary users that such modified work is not the original Software.

5. User agrees that ACM, the authors of the original work and others
may enjoy a royalty-free, non-exclusive license to use, copy, modify
and redistribute these modifications to the Software made by the User
and distributed to third parties as a derivative work under this
agreement.

6. This agreement will terminate immediately upon User's breach of, or
non-compliance with, any of its terms. User may be held liable for any
copyright infringement or the infringement of any other proprietary
rights in the Software that is caused or facilitated by the User's
failure to abide by the terms of this agreement.

7. This agreement will be construed and enforced in accordance with
the law of the state of New York applicable to contracts performed
entirely within the State. The parties irrevocably consent to the
exclusive jurisdiction of the state or federal courts located in the
City of New York for all disputes concerning this agreement.


Commercial Use

Any User wishing to make a commercial use of the Software must contact
ACM at permissions@acm.org to arrange an appropriate
license. Commercial use includes (1) integrating or incorporating all
or part of the source code into a product for sale or license by, or
on behalf of, User to third parties, or (2) distribution of the binary
or source code to third parties for use with a commercial product sold
or licensed by, or on behalf of, User.

Revised 6/98