(1) The parties to a special case may enter into a written agreement that, on the Court of Appeal's decision in the affirmative or negative on the questions raised by the special case, a stated amount must be paid by a party to another party, either with or without costs of the proceeding.
(2) Judgment may be given for the stated amount with or without costs, and the judgment may be enforced immediately unless otherwise agreed or stayed on appeal.
(3) In this rule:
"stated amount "means—
(a) an amount agreed by the parties; or
(b) an amount set by the Court of Appeal; or
(c) an amount set in the way agreed by the parties or as
the Court of Appeal orders.