Abstract
Experts on style agree that writers frequently have trouble using the unattended anaphoric this clearly. Few, however, have proposed explicit guidelines for sorting appropriate from inappropriate uses. This article examines the limitations of a recent classification proposed by Moskovit (1983), and then suggests an alternate classification relying on concepts from functional grammar. In particular, Moskovit's distinction between demarcational, syntactic, and semantic reference is found not to predict actual readers' judgments. In its place, the authors suggest a classification based on the functional notions of topic and focus. The unattended this is shown to be English's economical routine for moving the focus of a discourse from nominal topics to clausal predications relating those topics. Before deciding to employ this routine, however, writers are warned to evaluate its consequences on clarity and rhetoric.