 This is
  useful in situations where we want to debug just a hand picked set of nodes.
  The <tt>name</tt> may be redefined in situations, where the parser parameter does not reflect the name of the parser to debug.</p>
<p> The following are synonyms for <tt>BOOST_SPIRIT_DEBUG_TRACE_NODE</tt></p>
<ol>
  <li>BOOST_SPIRIT_DEBUG_TRACE_RULE_NAME</li>
  <li>BOOST_SPIRIT_DEBUG_TRACE_GRAMMAR_NAME</li>
</ol>
<hr>
<p>Here's the original calculator with debugging features enabled:</p>
<pre>
    <code><span class=pre