y a state of <code>a</code>.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-unwind"><a href="#val-unwind" class="anchor"></a><code><span><span class="keyword">val</span> unwind : <span>int <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> <a href="LTSA/Tree/index.html#type-t">LTSA.Tree.t</a></span></code></div><div class="spec-doc"><p><code>unwind depth s</code> unwinds LTS system <code>s</code> to produce an