f a tree. Returns the <code>buffer</code> member if the latter
is a valid tree identifier and NULL otherwise.</p>
</dd>
<dt class="hdlist1"><code>setup_traverse_info</code></dt>
<dd>
<p>Initialize a <code>traverse_info</code> given the pathname of the tree to start
traversing from.</p>
</dd>
</dl>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_walking">Walking</h2>
<div class="sectionbody">
<div class="dlist">
<dl>
<dt class="hdlist1"><code>tree_entry</code></dt>
<dd>
<p>Visit the next entry in a tree. R