Section 700.63 - Letters of understanding(a) A letter of understanding is an official action that may be issued in resolving special priorities assistance cases to reflect an agreement reached by all parties (e.g., the Department of Commerce, the Determination Department, the Delegate Agency, the supplier, the customer).(b) A letter of understanding is not used to alter scheduling between rated orders, to authorize the use of priority ratings, to impose restrictions under this regulation, or to take other official actions. Rather, letters of understanding are used to confirm production or shipping schedules which do not require modifications to other rated orders.49 FR 30414, July 30, 1984. Redesignated at 54 FR 601, Jan. 9, 1989, as amended at 79 FR 47570 , Aug. 14, 2014