Copyright © 2007 Benjamin T. D. Newman Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Benjamin Newman not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. Benjamin Newman makes no representations about the suitability of this software for any purpose. It is provided ‘as is’ without express or implied warranty.