Massachusetts General Laws Part II. Real and Personal Property and Domestic Relations (Ch. 183-210) Ch. 204, § 33

Sections twenty-seven to thirty-two, inclusive, shall so far as possible be deemed to be declaratory of the common law of this commonwealth. Said sections shall be liberally construed so as to effectuate the intent that all powers of appointment whatsoever shall be releasable unless otherwise expressly provided in the instrument creating the power.