default this is <code><a href="../Bool.html">false</a></code>, so background states will be "paused" when they are not active.</p></div></div><div class="field "><a name="subState"></a><h3 class="anchor"><code><span class="label">read only</span><a href="#subState"><span class="identifier">subState</span></a>:<a class="type" title="flixel.FlxSubState - A FlxSubState can be opened inside of a FlxState." href="./flixel/FlxSubState.html">FlxSubState</a></code></h3><div class="doc"><p>Current substate. Substate