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CONT’D ... that cohesion is the product of two overlapping strategies: a structural strategy for making syntagmatic units on various scales, and a textural strategy for making cohesion chains of various lengths; we know that chains interact with one another through constituency structure relations among their tokens, and that consistency of patterning can result from both typical thematic discourse formations and from patterns of lexico-grammatical choices;
= We also have some ideas about larger scale text-structure, mainly from genre theory, and about intermediate rhetorical structures; but while chain-like and co-patterning relations can be somewhat independent of sequential order, constituency structures are not so flexible in this regard, though perhaps moreso than one might imagine;
= We also know that texts as units can have thematic, generic, and actional relations to one another; and they can cohere in terms of the thematics they present, the stances they take to audiences and to their own content (interpersonal, attitudinal, heteroglossic), and the ways in which they thematize, focus, and organize information;