Jackson signed an agreement to sell 79 acres of land to Devenyns. Jackson owned 80 acres and was apparently intending to keep for himself the acre on which his home was located. The written agreement also stated that “Devenyns shall have the option to buy on property _____,” but nothing was stated in the blank space. Devenyns sued to enforce the agreement. Was it binding? [In re Jackson’s Estate, 892 P2d 786 (Wyo)]