N.D. Cent. Code § 27-02-23: Decisions must be written - Filing - Requirement

The supreme court, in any case decided by it, shall give its decision in writing, which must be filed with the clerk of said court with the other papers in the case. A decision in a case heard at a general or special term, and all orders affecting the same, may be filed in vacation, and judgment entered thereon in pursuance of the finding and order of the court with the same effect as upon a decision made and filed in that term.