>chapter</em></span> would be good choices, whatever fits best into
      the flow of the document. You can even set the container wrapper to type <span class="emphasis"><em>index</em></span>
      provided you turn off index generation by the XSL stylesheets, for example
      by setting the following build requirements in the Jamfile:
    </p>
<pre class="programlisting">&lt;format&gt;html:&lt;auto-index-internal&gt;on       # Use internally generated indexes.
&lt;auto-index-type&gt;index                 