Bill DirksHans VerkuilMartin RubliCopyright © 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Bill Dirks, Michael H. Schimek, Hans Verkuil, Martin Rubli This document is copyrighted © 1999-2008 by Bill Dirks, Michael H. Schimek, Hans Verkuil and Martin Rubli.Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Versi