Rule 3 Defence in action of trespass, etc.

Where a defendant in any action of trespass or in any action in which the title to any land comes in question (not being an action for the recovery of the land) intends to rely on a justification of the acts complained of, as having been done in exercise of any alleged right, he may serve a notice to that effect, setting out such alleged right, on the plaintiff [^f1 within 28 days after service of his notice of intention to defend].