著作権 (C) 2002 Salvador Peralta
著作権に関する情報は以下に、原文をそのまま記述します。 Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license can be found at the GNU web site.