(1) A party liable to pay costs may serve on the party entitled to the costs a written offer to settle the costs.
(2) An offer to settle costs—(a) must be for all of the person’s liability for costs to the party to whom it is made; and(b) may be served at any time after the day liability for the costs accrues.
(3) An offer to settle costs—(a) can not be withdrawn without the leave of the court; and(b) does not lapse because the party to whom it is made rejects or fails to accept it; and(c) ends when a copy of an order appointing a costs assessor is served on the assessor.
(4) Other than for rule 734 , a party must not disclose to a costs assessor the amount of an offer to settle until the costs assessor has assessed all items in the costs statement, and decided all questions, other than the cost of the assessment.