_1_xml_engine.html">XmlEngine</a> mean_variance_xml_engine_in_;       <span class="comment">/* xml engine for mean and variance input. */</span></div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        <a class="code" href="class_s_p_h_1_1_xml_engine.html">XmlEngine</a> mean_variance_xml_engine_out_;      <span class="comment">/* xml engine for mean and variance output. */</span></div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;        </di