The destroyedPart event signals that the part and its children have been destroyed. Any system resources associated with the destroyed parts have been released.

An instance event signals that a change has occurred to the instance of the instanceClass that was created as a result of the most recent new action.

An instanceClass event indicates a change to the class of the instance to be created when the new action is performed.

An instanceClassName event signals a change in the name (Symbol) of the instanceClass.

A self event indicates that the value of the target part itself has changed.