class="phrase"><a name="spirit.qi.reference.directive.no_case.expression_semantics"></a></span><a class="link" href="no_case.html#spirit.qi.reference.directive.no_case.expression_semantics">Expression
            Semantics</a>
          </h6>
<p>
            Semantics of an expression is defined only where it differs from, or
            is not defined in the subject's concept.
          </p>
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