:: Mechanisms and Curly Arrows ::

<body> <p><a href="http://validator.w3.org/check/referer"><img src="http://www.w3.org/Icons/valid-xhtml10" alt="Valid XHTML 1.0!" height="31" width="88" /></a></p> Author: <span style="color: maroon;">Paul Smart</span> <a href="mailto:cha03pas@shef.ac.uk?">cha03pas@shef.ac.uk</a> (document modification date: 26th May 2004) </body>