Copyright 1994 -- 2006 by the authors
This software is made available for research and instructional use only. You may copy and use this software without charge for these non-commercial purposes, provided that the copyright notice and associated text is reproduced on all copies. For all other uses (including distribution of modified versions), please contact the authors.
This software is made available "as is" without any assurance that it will work for your purposes. The software may in fact have defects, so use the software at your own risk.