 This tracks to the third of the three point models, i.e. Exclusivism, but is split into two subsections: Total Replacement and Partial Replacement.
<clarity>  This tracks to the third of the three point models, i.e. Exclusivism, but is split into two subsections: Total Replacement and Partial Replacement.
 Knitter's "replacement model" corresponds to Exclusivism in the three-point model, but is split into two subsections: Total Replacement and Partial Replacement.