pan>
  <span>int <span class="arrow">&#45;&gt;</span></span>
  <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span>
  unit</span></code></div><div class="spec-doc"><p><code>dot_output_execs name depth s</code> writes a .dot representation, with name <code>name</code> of the execution trees obtained by calling <code>unwind depth s</code>. The name of the file is <code>name.dot</code> or specified with the <code>fname</code> optional argument. Drawing options can be specified with the <co