All stuff in this zip file which was written by Roger W. Haworth, RHaworth of Wikipedia is released under the
<ul>
<li><b><a href="https://en.wikipedia.org/wiki/en:GNU_Free_Documentation_License" class="extiw" title="w:en:GNU Free Documentation Licence">GNU Free Documentation Licence</a></b>, Version 1.2 or any later version published by the <a href="https://en.wikipedia.org/wiki/en:Free_Software_Foundation" class="extiw" title="w:en:Free Software Foundation">Free Software Foundation</a>; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the licence is included in the section entitled <i><a href="https://commons.wikimedia.org/wiki/Commons:GNU_Free_Documentation_License,_version_1.2" title="Commons:GNU Free Documentation Licence, version 1.2">GNU Free Documentation Licence</a></i> or
<li>the <a href="https://en.wikipedia.org/wiki/en:Creative_Commons" class="extiw" title="w:en:Creative Commons">Creative Commons</a> <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Attribution-Share Alike 4.0 International</a> licence.
</ul>

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- website: <a href="http://rhaworth.net/" target="_blank">RHaworth.net</a>