§490:3-117  Other agreements affecting
instrument.  Subject to applicable law regarding exclusion of proof of
contemporaneous or previous agreements, the obligation of a party to an
instrument to pay the instrument may be modified, supplemented, or nullified by
a separate agreement of the obligor and a person entitled to enforce the
instrument, if the instrument is issued or the obligation is incurred in
reliance on the agreement or as part of the same transaction giving rise to the
agreement.  To the extent an obligation is modified, supplemented, or nullified
by an agreement under this section, the agreement is a defense to the
obligation. [L 1991, c 118, pt of §1]