This program is free software; you may redistribute it and/or
    modify it under the conditions of the LaTeX Project Public
    License, either version 1.2 or (at your option) any later version.
    The latest version of this license is in
    http://www.latex-project.org/lppl.txt, and version 1.2 or later is
    part of all distributions of LaTeX version 1999/12/01 or later.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    LaTeX Project Public License for more details.