// This software is copyright (c) 1996-2013 by
//      John Tromp
//      600 Route 25A
//      East Setauket
//      NY 11733
// E-mail: john.tromp@gmail.com
//
// This notice must not be removed.
// This software must not be sold for profit.
// You may redistribute if your distributees have the
// same rights and restrictions.