Any person entitled to an estate for life or years in any undivided part of the property, whose estate has been sold, shall be entitled to receive such sum in gross as is, deemed, upon principles of law applicable to annuities, a reasonable satisfaction for the estate. If the person so entitled consents to that sum, the person shall accept it by executing an instrument that is duly acknowledged or proved in the same manner as deeds for the purpose of record, and filed with the clerk.
Oregon Legal Code