ue to be drawn behind the current state.</p>
<p>If background states are not <code>visible</code> when you have a different state on top,
you should set this to <code><a href="../Bool.html">false</a></code> for improved performance.</p></div></div><div class="field "><a name="persistentUpdate"></a><h3 class="anchor"><code><span class="label label-meta label-meta-value" title="Used to store default values for fields and function arguments.">@:value(false)</span><a href="#persistentUpdate"><span class="identi