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The effect of applying the 'knockout' rule is that the conflicting terms do not become part of the parties' contract and the contract 'consists of those terms on which the writings of the parties agree, together with any supplementary terms incorporated under any other provisions of this act.” 2-207(3).


The UCC is silent on the question of whether 'additional or different terms' mean the same thing. 2-207(1). There is seemingly no agreement on that question. Northrop v. Litronic Indus., 29 F.3d 1173, 1175 (7th Cir.1994). It is unclear whether the reference to 'different' terms in the acceptance, 2-207 (1), means that the ...