(810 ILCS 5/2A-202) (from Ch. 26, par. 2A-202)
Sec. 2A-202.
Final written 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 writing
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 dealing or usage of trade or by |
| course of performance; and
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(b) by evidence of consistent additional terms unless
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| the court finds the writing to have been intended also as a complete and exclusive statement of the terms of the agreement.
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(Source: P.A. 87-493.)
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