 import mx.core.ISWFBridgeGroup;  
 
 /**
- *
+ *  The IMarshalSystemManager interface defines the methods and properties that classes must implement
+ *  if they want to access, add, and remove bridges to other applications in a cross-versioned configuration.
+ * 
  *  @langversion 3.0
  *  @playerversion Flash 10
  *  @playerversion AIR 1.5

     *  Each child bridge represents components in another sandbox
     *  or compiled with a different version of Flex.
     *
     *  @param bridge The bridge for the child
     *
     *  @langversion 3.0
     *  @playerversion Flash 10

    function addChildToSandboxRoot(layer:String, child:DisplayObject):void;

    /** 
     *  Removes the specified child from the sandbox root in the layer requested.
     *
     *  @param layer The name of IChildList in SystemManager.
     *
     *  @param child The DisplayObject to add.
     *
     *  @langversion 3.0
     *  @playerversion Flash 10
