(4) To exclude or modify a warranty against interference
or against infringement (Section 2A-211) or any part of it, the
language must be specific, be by a writing, and be conspicuous,
unless the circumstances, including course of performance,
course of dealing, or usage of trade, give the lessee reason to
know that the goods are being leased subject to a claim or
interest of any person.
(Source: P.A. 87-493.)