Testamentary gifts may be specific, demonstrative, general, or residuary. A specific testamentary gift directs the delivery of property particularly designated. A demonstrative testamentary gift designates the fund or property from which the gift is to be satisfied but nevertheless is an unconditional gift of the amount or value specified. A general testamentary gift does not direct the delivery of any particular property. A residuary testamentary gift includes all the property of the estate that is not effectively disposed of by other provisions of the will.