[22] There is, however, no prohibition against a purchaser entering into a contract where s 73 WHSR has not been complied with by the vendor. Neither is there any express prohibition on such a contract being entered into, nor any legislative declaration that a contract entered into is unlawful or void. Unless "offer", which is not specially defined, and which is a well understood term in the law of contract, has an unusual meaning, it would arguably not be a contravention of s 73 for an owner to accept an offer to purchase made to him by someone who wished to purchase the property, at least where the offer to buy was the initiation of the transaction and the initial offer was accepted by the vendor without any subsequent bargaining. It was not suggested in submissions or in the record that, if a transfer of land in respect of which the vendor had not complied with the obligation in s 73 were presented for registration in the Land Titles Office, it would not be registered. Upon registration indefeasible title would be conferred on the purchaser.