Blurb:

In Chapter 1, we relate RST to Systemic Functional Linguistics by locating RST in the various dimensions of SFL.
In terms of stratification, RST serves as a semantic resource for realizing fields of activity within context, and it is in tern realized by the lexicogrammatical systems that are used in clause complexing (cf. Halliday 1985; Halliday & Matthiessen 2014: Chapter 7; see Matthiessen for explorations of fields of activity).
In terms of metafunction, RST is located within the logical mode of the ideational metafunction, and it is closely related to the textual system of PROGRESSION and the experiential system of CONFIGURATION. RHETORICAL RELATIONS is a logical system. It has the properties of logical systems in general, and it involves both the systemic options from the system (paradigmatic property) and iterative relational structure (syntagmatic structure).
In terms of instantiation, RST on the one hand deals with text analysis and investigates text ¬– a semantic unit located at the instance pole of the cline of instantiation. On the other hand, it is extended to the potential pole of the cline of instantiation as systems of rhetorical relations. Also, it involves the intermediate registerial patterns along the cline by taking registerial variation into consideration (see Chapter 4).