e user class derives publicly from this class to make it compatible
            with avl tree based containers.
          </li></ul></div>
<pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="special">...</span><span class="identifier">Options</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">avl_set_member_hook</span><span class="special">;</span>
</pre>
<div class