n="top"><a href="#upgrade_node-2">upgrade_node/2</a></td><td>
  Moves a node upwards a level.</td></tr>
</table>

<h2><a name="functions">Function Details</a></h2>

<h3 class="function"><a name="breadth_fold-3">breadth_fold/3</a></h3>
<div class="spec">
<p><tt>breadth_fold(Fun::FFun, AccIn::Acc, Tree::<a href="#type-tree">tree()</a>) -&gt; AccOut::Acc</tt>
<ul class="definitions"><li><tt>FFun = fun((CurrNode::<a href="#type-tree_node">tree_node()</a>, Acc) -&gt; Acc)</tt></li><li><tt>Acc = term()</tt></li><