This package is released under the GPL version 2. It can also be used under the following license, which is in some respects more liberal. License: Copyright 2000 Mayo Foundation for Medical Education and Research. This software is accepted by users "as is" and without warranties or guarantees of any kind. It may be used for research purposes or in relation to projects with commercial applications or included in commercial packages, but only so long as it is not relicensed as a stand-alone program, and only so long as the first two sentences of this paragraph (copyright notice and no warranty) are reproduced with the software. Modifications for use with R (c) 1998-2007 B.D. Ripley under the same conditions. For use under the GPL version 2 the following applies: This is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. The file COPYING in the R top-level directory or the doc/ directory of the R sources or installation is a copy of the 'GNU General Public License'. It can also be obtained at http://www.r-project.org/Licenses/ .