Misunderstanding Stratification [New]

Martin (1992: 81):

As noted above, in general English Text prefers to distribute descriptive responsibility for text structure across phonology, lexicogrammar and the four different systems comprising the discourse semantics.

Blogger Comments:

This misunderstands stratification. To be clear, in SFL Theory, the text is a semantic unit, and text structure is thus the syntagmatic dimension of the semantic stratum. Lexicogrammar and phonology provide descriptions of lexicogrammatical and phonological structures, not text structure. The lexicogrammatical systems of cohesion do provide descriptions of realisations of textual cohesion, but not text structure.

Martin's four discourse semantic systems, on the other hand, are his rebrandings of Halliday & Hasan's (1976) systems of lexicogrammatical cohesion and developments of Halliday's semantic system of speech function.