></p>
</div>

<h3 class="function"><a name="is_empty-1">is_empty/1</a></h3>
<div class="spec">
<p><tt>is_empty(X1) -&gt; any()</tt></p>
</div>

<h3 class="function"><a name="lookup-2">lookup/2</a></h3>
<div class="spec">
<p><tt>lookup(Key, Tree) -&gt; any()</tt></p>
</div>

<h3 class="function"><a name="to_list-1">to_list/1</a></h3>
<div class="spec">
<p><tt>to_list(Tree) -&gt; any()</tt></p>
</div>
<hr>

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