When the law has requirements for a type of contract, it is usually that the agreement is registered in writing and signed by one or both parties or their agent. According to the Uniform Commercial Code (UCC) § 2-207 (1), a declaration of final acceptance or written confirmation of an informal agreement may constitute a valid acceptance, even if it contains conditions that supplement or derogate from the offer or informal agreement. Additional or derogating conditions shall be treated as proposals to supplement the contract in accordance with paragraphs 2 to 207 of this section. Between traders, such conditions will be part of the contract, unless the agreement is signed, all U.S. forces will be withdrawn, and all U.S. military actions will be suspended at the N&S. The second is to break an agreement and accept the consequences of such an infringement and be prepared to accept those consequences.