Elements Serving As Textual Theme [Defined]

Halliday & Matthiessen (2014: 107-8):

1. [textual] continuative. A continuative is one of a small set of words that signal a move in the discourse: a response, in dialogue, or a new move to the next point if the same speaker is continuing. The usual continuatives are yes no well oh now.
2. [textual] conjunction. A conjunction is a word or group that either links (paratactic) or binds (hypotactic) the clause in which it occurs structurally to another clause. Semantically, it sets up a relationship of expansion or projection;
3. [textual] conjunctive Adjunct (‘discourse Adjunct’). These are adverbial groups or prepositional phrases that relate the clause to the preceding text: they cover roughly the same semantic space as conjunctions.