When the Policy contains recital recourse may be had to them in constructing an ambiguity clause in the Policy, but where the operative words are unambiguous, the recital cannot be resorted to, vary their grammatical meaning. The assured cannot put his own meaning upon a Policy but, where it is ambiguous, it is to be constructed in the sense in which he might reasonably have understood it, if the Insurers wish to escape liability under given circumstances they must use words admitting of no possible doubts.
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UK: See: Contra Proferentem Rule.
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A standard policy provision that proves to be ambiguous may be interpreted in the light most favorable to the insured.