As shown in Figure 1, it is located mid-region along the cline of instantiation, between the potential pole of the overall (collective) meaning potential of a language and the instance pole of instantial acts of meaning unfolding to make up texts in context.
we observe registerial variation (like any other kind of variation) as selections in texts as they unfold in their contexts of situation, and when we try to generalize these selections as recurrent patterns of selection, we find that the generalized patterns of selection are located mid-region along the cline of instantiation.