title: What is the best practice for communicating between a parent and child SWF in AS3?
body: <p>Consider you have A.swf generated by compiling A.fla. A.fla's document root class is <code>AStage()</code>. Now consider B.swf and it's B.fla. If B.fla loads A.swf. Can it cast A.swf's stage object to <code>AStage()</code>?</p>
  
  <p>If this is not possible, what is the recommended approach for communicating with child SWFs?</p>