Options over land have formed part of the law of real property for a long time. Their oldest uses are probably in the context of wills, allowing stated persons to purchase part of the testators” property, and in the law of landlord and tenant, giving the tenant the right to call for a renewal of the term or in some cases to purchase the freehold. Options are still used for both of these purposes, although statutory developments in the law of landlord and tenant have rendered the option to renew of less significance than was once the case. In addition, other uses have been found for options by landowners and conveyancers.