1. Litigants are enjoined to place all material facts before the court to enable the court to arrive at a just decision, and deliberate concealment of material facts will result in judgments being set aside as erroneously granted. 2. A holder of an offer letter lawfully issued in terms of the Gazetted Lands Act has legal authority to occupy and use the allocated land and possesses substantive rights that must be protected by the courts. 3. A person seeking rescission of judgment under Rule 449(1) must demonstrate that the judgment was erroneously granted in their absence and that they have a direct and substantial interest in the matter. 4. Administrative action under the Administrative Justice Act must be exercised fairly, reasonably and timeously, and a person whose rights are affected must be afforded an opportunity to be heard before a decision is made. 5. Upon acquisition of land by the state, former owners lose all rights to the acquired land by operation of law, and those rights vest in the holders of offer letters, permits or land settlement leases.