n1) n2) ...) nn</code>, where <code>n1, ..., nn</code> are the nodes of <code>t</code>. The order in which the nodes are presented is unspecified.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-dot_output"><a href="#val-dot_output" class="anchor"></a><code><span><span class="keyword">val</span> dot_output : 
  <span>string <span class="arrow">&#45;&gt;</span></span>
  <span>string <span class="arrow">&#45;&gt;</span></span>
  <span>?options:<span><a href="../../../../../../Ut