An offer by a merchant to buy or sell goods in a signed writing which
by its terms gives assurance that it will be held open is not revocable,
for lack of consideration, during the time stated or if no time is
stated for a reasonable time, but in no event may such period of
irrevocability exceed three months; but any such term of assurance on a
form supplied by the offeree must be separately signed by the offeror.
Structure New York Laws
Part 2 - Form, Formation and Readjustment of Contract
2-201 - Formal Requirements; Statute of Frauds.
2-202 - Final Written Expression: Parol or Extrinsic Evidence.
2-206 - Offer and Acceptance in Formation of Contract.
2-207 - Additional Terms in Acceptance or Confirmation.
2-208 - Course of Performance or Practical Construction.