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[[13158]] UCC 3-409(a)provides: 'Acceptance' means the drawee's signed agreement to pay a draft as presented. It must be written on the draft and may consist of the drawee's signature alone. Acceptance may be made at any time and becomes effective when notification pursuant to instructions is given or the accepted draft is delivered for the purpose of giving rights on the acceptance to any person. 

Official Comment 2 to UCC § 3-409(a), states that, as a general rule, 'the mere signature of the drawee on the instrument is a sufficient acceptance.' 

To constitute an 'acceptance' under 3-409(a), the acceptance must ...