Section 1B. Unless a contrary intent is manifested in the terms of an instrument creating or limiting a power of appointment, it shall be presumed that the person so creating or limiting such power intended to authorize the donee thereof, when exercising said power, not only to create absolute interests but also to create less than absolute legal and equitable interests, including interests in trust for the benefit of objects of said power even though the trustees thereof may not be objects of said power and including new powers of appointment, general or more limited, in objects of said power, even though the objects of the new powers may include one or more that are not objects of said power.