Can a right of first refusal bind non-parties? Is it registrable under the Land Titles Act, R.S.O. 1990, c. L.5 (the Land Titles Act)? These questions lie at the heart of this appeal.
 The parties expressly consented to registration of the Agreement on title to the Property. It has been so registered for almost twenty-five years. It was properly registered at the outset; it remains properly registered today. Accordingly, s. 71(2) operates and the interests of the holders of the right of first refusal are protected.