You are allowed to copy and distribute this package, providing that you make
no charges other than are necessary for copying, materials and handling. The
files should not be separated or changed. Copyright remains with the <A href="author.html">Author</A>, <A HREF="mailto:ajp@wg.icl.co.uk">Andrew Pullan</a>.
<p>
You are free to improve the code provided you supply <strong>ONLY</strong> me with the
updated source. This is so everybody can benefit from your improvements in future
versions. You can <strong>not</strong> however use the code in any commercial products
without specific permission from the <A href="author.html">Author</a>.