 situations where we want to debug just a hand picked set of
  nodes.</p>
<p> The following are synonyms for <tt>BOOST_SPIRIT_DEBUG_TRACE_NODE</tt></p>
<ol>
  <li>BOOST_SPIRIT_DEBUG_TRACE_RULE</li>
  <li>BOOST_SPIRIT_DEBUG_TRACE_GRAMMAR</li>
</ol>
<p><a name="spirit_trace_node_p__flag__name_"></a> </p>
<h3>BOOST_SPIRIT_DEBUG_TRACE_NODE_NAME(p, name, flag)</h3>
<p> Similar to <tt>BOOST_SPIRIT_DEBUG_NODE</tt>. Additionally allows selective
  debugging and allows to specify the name used during debug printout.