An operator is exported from a place within a sentence if it is repositioned so that the whole of the rest of the sentence is within its scope. This may or may not give an equivalent sentence. ‘When they come, they frequently dine’ is equivalent to ‘frequently, when they come they dine’, in which ‘frequently’ has been exported. But ‘when they dine, they are amazingly sick’ is not equivalent to ‘amazingly, when they dine they are sick’. Illicit exportation can easily give rise to fallacies. See also scope.