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<para>
Support for the cdb (Constant DataBase) lookup method is provided by code
contributed by Nigel Metheringham of (at the time he contributed it) Planet
Online Ltd. The implementation is completely contained within the code of Exim.
It does not link against an external cdb library. The code contains the
following statements:
</para>
<blockquote>
<para>
Copyright &copy; 1998 Nigel Metheringham, Planet Online Ltd
</para>
<para>
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
</para>
<para>
This code implements Dan Bernstein&#x2019;s Constant DataBase (cdb) spec. Information,
the spec and sample code for cdb can be obtained from
<emphasis role="bold"><ulink url="http://www.pobox.com/~djb/cdb.html">http://www.pobox.com/~djb/cdb.html</ulink></emphasis>. This implementation borrows some
code from Dan Bernstein&#x2019;s implementation (which has no license restrictions
applied to it).
</para>
</blockquote>

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<varlistentry><term><emphasis>Term</emphasis></term>
<listitem><para>A paragraph that describes the term above, saying something 
about it, usually running over a number of lines.</para></listitem>
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