Choice contracts give the right to buy later on at set terms, usually used in growth to secure websites.

https://www.scribd.com/document/977331276/Residential-Or-Commercial-Property-Disagreement-Lawyer-in-Albany-Strategies-to-Solve-Boundary-and-Easement-Issues-165656

Alternative agreements give the right to buy later on at set terms, commonly used in growth to protect websites.