ass="lineno">  327</span>&#160;      os &lt;&lt; <span class="charliteral">&#39;p&#39;</span> &lt;&lt; n &lt;&lt; <span class="stringliteral">&quot;[shape=box3d, color=blue, label=\&quot;&quot;</span>;</div><div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;      <span class="keywordflow">if</span>(n-&gt;_name.empty()) os &lt;&lt; n;</div><div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;      <span class="keywordflow">else</span> os &lt;&lt; n-&gt;_nam