Comment: All actors, use cases 1 though 4, Class1 and this comment scoped to Package1. Use Cases 1 through 4 have no subject. Use Case5 has Class1 as both its owner and its subject. Comment: Activity1 is an Activity, this comment is owned by and annotates it Comment: theActor is owned by Class2, theClass2 is owned by Association1, this comment annotates and is owned by Association1