The binding legal principles established are: (1) An owner vindicating property through the rei vindicatio principle need only prove: (a) ownership of the property; (b) that the property is in possession of the defendant; and (c) that the property still exists. The burden then shifts to the occupant to establish a lawful right to continue in occupation. (2) Where a written contract does not accurately reflect the common intention of the parties due to a mistake, rectification is available as a remedy. Rectification does not create a new contract but merely corrects the written memorial to reflect the true agreement. (3) Rectification can be pursued in motion proceedings and need not always be instituted by way of action, particularly where it arises as a response to a defence raised in answering papers. (4) Where a party fails to plead a case for rectification in founding papers because the issue only arises from the opponent's answering affidavit, this does not necessarily defeat the claim for rectification. (5) The parol evidence rule, which ordinarily excludes extrinsic evidence to contradict, add to, or modify the meaning of a written document intended as a complete memorial, yields to the equitable principle of rectification. When rectification is claimed, parties may lead evidence of the true terms agreed upon. (6) Non-joinder is not fatal to rectification where the allegedly necessary parties are fully aware of the proceedings and their interests are adequately represented. (7) Surrounding circumstances, including subsequent conduct of parties, addenda to agreements, acknowledgements of debt, and correspondence, can establish the true common intention of parties for purposes of rectification. (8) Where a party consistently deals with another entity as the contracting party through correspondence, payments, and signed documents, and fails to object when that entity asserts its status as the contracting party, such conduct may constitute an admission or at minimum will be an important factor in determining the true contractual relationship.