ber functions, it's to make the
          library more easily extensible: if you want to add additional generic operations
          - let's say the <span class="emphasis"><em>n'th moment</em></span> - then all you have to
          do is add the appropriate non-member functions, overloaded for each implemented
          distribution type.
        </p>
<div class="tip"><table border="0" summary="Tip">
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<td rowspan="2" align="center" valign="top" width="25"><img alt="[Tip]" src="../../../../../../../doc/