Because I'm lazy to experiment this instant (not wanting to get distracted from my current track), and also its probably a useful remainder for others I'll just ask... When MyClass is loaded, #initialize is sent to it. Typically the class-side>>initialize should not call "super initialize" to avoid re-initializing the superclaass, but what if MyClass doesn't implement #initialize? Does the message fall through to the superclass, or is #initialize only sent if MyClass implements it? Concrete example... FFIExternalEnumeration subclass MyEnumeration needs to be sent #initializeEnumeration when it is loaded. We have... FFIExternalEnustmeration>>#initialize self initializeEnumeration so is MyEnumeration *required* to implement its own MyEnumeration>>#initialize, or can it rely FFIExternalEnustmeration>>#initialize. I believe it is the former, but just wanted to confirm my understanding. cheers -ben