Under Probate Code 145, a spouse waives his or her interest in the other spouse’s estate by entering into “a complete property settlement agreement after or in contemplation of a separation, dissolution or annulment of their marriage.” This decision holds that to operate as such a waiver, the settlement agreement need not recite that it waives that right nor that it is a complete property settlement. Completeness may be shown by extrinsic evidence, as it was in this case. The settlement agreement was complete despite the fact that it left certain details to be determined later. A complete property settlement agreement operates as an enforceable waiver of rights in the other spouse’s estate unless either the surviving spouse wasn’t represented by an attorney or the decedent didn’t make a fair and reasonable disclosure of the property and financial obligations. The waiver is effective and enforceable despite the fact that one spouse dies before a final judgment of dissolution is entered.