GNU Smalltalk Library Reference: BLOX.Blox-basic

deepCopy: It does not make sense to make a copy, because it would make data inconsistent across different objects; so answer the receiver
release: Destroy the receiver if it still exists, then perform the usual task of removing the dependency links
shallowCopy: It does not make sense to make a copy, because it would make data inconsistent across different objects; so answer the receiver