Definitions; property included in gross estate — resident decedent; property included in gross estate — nonresident decedent; powers of appointment and certain income interests; jointly owned property; transfers in contemplation of death; transfers taking effect at or after death; revocable transfers; annuities; proceeds of life insurance; transfers for insufficient consideration; prior interests; charitable, educational, religious, etc., bequests; valuation of farm and small business real property [Repealed]