In a cline of instantiation, both genre and register lie at the system end, and text type is the next step
 On the stratified model (Martin 1992) that Rose advocates, genre and register are distinct strata. Instantiation is the relation between system and instance. It is not a relation across strata. So, in terms of Martin's stratification — to be consistent with the notion of instantiation — the cline for each distinct stratum would be the relation between:
- genre as system and genre as instance
- register as system and register as instance
 In Martin's stratified model, genre and register are strata of context. Here Rose is construing text type — i.e. language instead of context — as a point on the cline of instantiation of context.
Rose's construal of text type is quite difficult to unpack, owing to the fact that:
- the model that Rose advocates is full of internal inconsistencies, and
- Rose's construal of that model is inconsistent with the model itself.