Halliday & Matthiessen (2004: 552):
Alternatively, endophoric reference may point ‘forwards’ to the future of the unfolding text, that is, to a referent that is yet to be introduced. … This type of endophoric reference is called cataphora, or cataphoric reference. Cataphora is quite rare compared with anaphora. The only exception is structural cataphora, which is common. Here the reference is resolved within the same nominal group where the reference item appears; a Deictic the or that/those is used to indicate that the Qualifier of the nominal group is to be taken as defining.