> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-depth"><a href="#val-depth" class="anchor"></a><code><span><span class="keyword">val</span> depth : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> int</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-pp_node"><a href="#val-pp_node" class="anchor"></a><code><span><span class="keyword">val</span> pp_node : <span><span class="xref-unresolved">Stdlib<