Jigsaw Team (Yves Lafon &amp; Benoit Mahe). <a href="http://www.w3.org/Jigsaw/Doc/Programmer/design.html"><cite>Jigsaw 2.0 internal design.</cite></a> July 1999. URL: <a href="http://www.w3.org/Jigsaw/Doc/Programmer/design.html">http://www.w3.org/Jigsaw/Doc/Programmer/design.html</a>