Comments in notifier asdoc about the multitonKey

Author: Cliff Hall

src/org/puremvc/as3/multicore/patterns/observer/Notifier.as

@@ -26,6 +26,16 @@ package org.puremvc.as3.multicore.patterns.observer
  * classes have frequent <code>Facade</code> interactions and usually require
  * access to the facade anyway.</P>
  * 
+ * <P>
+ * NOTE: In the MultiCore version of the framework, there is one caveat to
+ * notifiers, they cannot send notifications or reach the facade until they
+ * have a valid multitonKey. 
+ * 
+ * The multitonKey is set:
+ * * on a Command when it is executed by the Controller
+ * * on a Mediator is registered with the View
+ * * on a Proxy is registered with the Model. 
+ * 
  * @see org.puremvc.as3.multicore.patterns.proxy.Proxy Proxy
  * @see org.puremvc.as3.multicore.patterns.facade.Facade Facade
  * @see org.puremvc.as3.multicore.patterns.mediator.Mediator Mediator