Answer how many fixed instance variables are reserved to each of the receiver’s instances
Answer whether my instances’ variables are immediate, non-OOP values.
Answer whether the receiver’s instances have no indexed instance variables
Answer whether x = y implies x == y for instances of the receiver
Answer whether, if x is an instance of the receiver, x copy == x
Answer whether the instance variables of the receiver’s instances are objects
Answer whether the receiver’s instances have indexed instance variables