/*
 * Copyright 1989 Graham Toal & Richard Hooker of Edinburgh Software Products
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose with or without fee is hereby granted provided
 * that the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation.
 *
 * This program is publicly available, but is NOT in the public domain.  The 
 * difference is that copyrights granting rights for unrestricted use and 
 * redistribution have been placed on the software to identify its 
 * authors.  You are allowed and encouraged to take this software and
 * build commercial products, freeware products, shareware products, and
 * any other kind of product you can think up, with the following restriction:
 *
 * If you redistribute the source to this program, or a derivative of that
 * source, you must include this copyright notice intact. If the system
 * this source is distributed with is under a stricter license (such as
 * a commercial license, the typical freeware "no commercial use" license,
 * or the FSF copyleft) then you must provide the original source under the
 * original terms.
 *
 * Edinburgh Software Products (E.S.P.) makes no representations about the
 * suitability of this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 *
 * E.S.P. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
 * E.S.P. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
 * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * Authors:  Graham Toal & Richard Hooker, Edinburgh Software Products,
 *           6 Pypers Wynd, Prestonpans, East Lothian, Scotland.
 */