§12A-2A-207.

§12A-2A-207.
   
              COURSE OF PERFORMANCE OR PRACTICAL CONSTRUCTION
                                      
   (1) If a lease contract involves repeated occasions for performance by
   either party with knowledge of the nature of the performance and
   opportunity for objection to it by the other, any course of
   performance accepted or acquiesced in without objection is relevant to
   determine the meaning of the lease agreement.
   
   (2) The express terms of a lease agreement and any course of
   performance, as well as any course of dealing and usage of trade, must
   be construed whenever reasonable as consistent with each other; but if
   that construction is unreasonable, express terms control course of
   performance, course of performance controls both course of dealing and
   usage of trade, and course of dealing controls usage of trade.
   
   (3) Subject to the provisions of Section 17 of this act on
   modification and waiver, course of performance is relevant to show a
   waiver or modification of any term inconsistent with the course of
   performance.