A contractual clause requiring a conveyancing attorney to effect transfer within a specified period is treated as pro non scripto where the Registrar of Deeds, not the attorney, is the official legally responsible for effecting transfer. Where a sale agreement makes payment contingent on registration and transfer, and makes no provision for interest on late payment, a party claiming interest must prove when registration occurred and when payment was received to establish when interest should begin to run. In land restitution matters, costs will be awarded where applicants are compelled to approach the court to enforce valid sale agreements that state respondents have unilaterally failed to perform, even where the Land Claims Court generally disfavors costs orders. However, punitive (attorney and client) costs require proof of mala fides; mere lack of funds to perform contractual obligations does not constitute bad faith sufficient to warrant punitive costs.