Bert G. J. Frederiks <tm@bedenkerij.nl>
Date: 1987--2001
Copyright © 2001 Bert G. J. Frederiks. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with Invariant Sections being ``The GNU Free Documentation License'', with the Front-Cover Text being ``The Time Machine'', and with no Back-Cover Texts. A copy of the license is included in the section entitled ``GNU Free Documentation License''.