ra_nodes</code> optional argument. Transitions listed in the <code>implicit_transitions</code> optional argument will <em>not</em> be drawn.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-dot_output_oc"><a href="#val-dot_output_oc" class="anchor"></a><code><span><span class="keyword">val</span> dot_output_oc : 
  <span>string <span class="arrow">&#45;&gt;</span></span>
  <span><span class="xref-unresolved">Stdlib</span>.out_channel <span class="arrow">&#45;&gt;</span></span>
