N.Y. U.C.C. 2-202

Section 2--202. Final Written Expression: Parol or Extrinsic Evidence.\n Terms with respect to which the confirmatory memoranda of the parties\nagree or which are otherwise set forth in a record intended by the\nparties as a final expression of their agreement with respect to such\nterms as are included therein may not be contradicted by evidence of any\nprior agreement or of a contemporaneous oral agreement but may be\nexplained or supplemented\n (a) by course of performance, course of dealing, or usage of trade\n(Section 1--303); and\n (b) by evidence of consistent additional terms unless the court finds\nthe record to have been intended also as a complete and exclusive\nstatement of the terms of the agreement.\n