Copyright (c) . All rights reserved. Author: Permission to use, copy, modify and distribute this software and its documentation is hereby granted, provided that both the copyright notice and this permission notice appear in all copies of the software, derivative works or modified versions, and any portions thereof, and that both notices appear in supporting documentation. ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. The author requests users of this software to send back any improvements or extensions that they make and grant him and/or the the rights to redistribute these changes without restrictions.