This material was developed by Sun Wu and Udi Manberat the University of Arizona, Department of Computer Science.Permission is granted to copy this software, to redistribute iton a nonprofit basis, and to use it for any purpose, subject tothe following restrictions and understandings.1. Any copy made of this software must include this copyright noticein full.2. All materials developed as a consequence of the use of thissoftware shall duly acknowledge such use, in accordance with the usualstandards of acknowledging credit in academic research.3. The authors have made no warranty or representation that theoperation of this software will be error-free or suitable for anyapplication, and they are under under no obligation to provide anyservices, by way of maintenance, update, or otherwise.  The softwareis an experimental prototype offered on an as-is basis.4. Redistribution for profit requires the express, written permissionof the authors.