Copyright (c) 1997 Robert Stockton / Carnegie Mellon University
Copyright (c) 2012 - 2015 Dylan Hackers
All rights reserved.
Use and copying of this software and preparation of derivative works based on this software are permitted, including commercial use, provided that the following conditions are observed:
This copyright notice must be retained in full on any copies and on appropriate parts of any derivative works.
Documentation (paper or online) accompanying any system that incorporates this software, or any part of it, must acknowledge the contribution of the Gwydion Project at Carnegie Mellon University, and the Dylan Hackers.
This software is made available “as is”. Neither the authors nor Carnegie Mellon University make any warranty about the software, its performance, or its conformity to any specification.
This document was originally authored by Robert Stockton.