/ul></p>
</div><p>
  Folds a function through a tree in breadth first order.</p>

<h3 class="function"><a name="collapse_node-2">collapse_node/2</a></h3>
<div class="spec">
<p><tt>collapse_node(Tree_node, Tree) -&gt; any()</tt></p>
</div><p>
  Removes the node from the tree, and attaches its children to
  its parent in the place it was. It expects the value of the
  parent to be updated appropriately.</p>

<h3 class="function"><a name="copy_properties-2">copy_properties/2</a></h3>
<div class="spec">
<p><tt>