Copyright (c) 2002 James Hess

      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 no invariant sections, with no Front-Cover Texts, and with
      no Back-Cover Texts. A copy of the license is included in the
      section entitled "GNU Free Documentation License".