Chapter 4 outlines a procedural relevance-based analysis of the definite determiner the. The definite article, it is argued, signals to the hearer that he should seek out an existing conceptual file on which to resolve reference. The indefinite article, on the other hand, instructs the hearer to open a new conceptual file. As interpretation proceeds, the hearer seeks to align the conceptual content within the nominal of the definite description with that in the target conceptual file. This approach to the contribution that definite descriptions make to speaker meaning is then applied to cases of misdescription and, it is claimed, it also offers fresh perspective on the referential–attributive distinction. Finally, stylistic effects which may arise from the choice and content of definite descriptions are discussed.