Final expression: parol or extrinsic evidence

(810 ILCS 5/2-202) (from Ch. 26, par. 2-202)     Sec. 2-202. Final expression: parol or extrinsic evidence. Terms with respect to which the confirmatory memoranda 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 explained or supplemented:         (a) by course of performance, course of dealing, or     usage of trade (Section 1-303); and        (b) by evidence of 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.(Source: P.A. 103-1036, eff. 1-1-25.)