The parol evidence rule cannot be invoked to exclude evidence of oral terms at the summary judgment stage where the evidence leaves open whether the written document contains all the terms of the parties' contract. A party's own pleading of a verbal agreement may itself raise a triable issue precluding summary judgment on a construction-only basis. The sparse language of a loan acknowledgment that does not expressly provide for compound interest cannot be summarily construed as requiring compound interest where there is evidence of a broader oral agreement.
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