C/C++ code.
    </p>
<p>
      Traditionally, in order to index a Docbook document you would have to manually
      add a large amount of <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">indexterm</span><span class="special">&gt;</span></code> markup: in fact one <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">indexterm</span><span class="special">&gt;</span></code>
      for each occurrence of each term to be indexed.
    </p>
<p>