43 The parole evidence rule prevents extrinsic evidence from adding to, varying, contradicting, or subtracting from the terms of a written contract where that written contract was intended to represent the entire agreement between the parties: see Hawrish v. Bank of Montreal, 1969 CanLII 2 (SCC), [1969] S.C.R. 515. In many cases where the rule is invoked, the contract between the parties is found not to have been intended to be reflected solely in writing but also in oral terms. Thus, the contract between the parties is partly written and partly oral. This is not a true exception to the rule. Rectification, however, is a true exception.
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