Hi Geoff, from what I've seen, the tree nodes don't do anything when selected.
You can set the "label" parameter if you'd like to do something special.
<t:tree model="..." id="myTree">
<p:label>
<t:if myTree.node.leaf>
<t:eventlink event="leafSelected" context="myTree.node.value" />
<t:else>
${myTree.node.label}
</t:else>
</t:if>
</p:label>
</t:tree>
