§ 2-202. Final expression in a record: parol or extrinsic evidence.
A. Terms with respect to which the confirmatory records of the parties agree or which are otherwise set forth in a record intended by the parties as a final expression of their agreement with respect to such terms as are included therein may not be contradicted by evidence of any prior agreement or of a contemporaneous oral agreement but may be supplemented by evidence of:
1. Course of performance, course of dealing, or usage of trade; and
2. Consistent additional terms unless the court finds the record to have been intended also as a complete and exclusive statement of the terms of the agreement.
B. Terms in a record may be explained by evidence of course of performance, course of dealing, or usage of trade without a preliminary determination by the court that the language used is ambiguous. ONCA 13-23, eff. Sept. 24, 2013.