Any relationship taken as an input to a derivation must itself be one the tables of this appendix allow, and whatever the derivation produces is then allowed by definition. Derivation must not be applied to grouping relationships, nor to links between core elements and elements of motivation, of strategy, or of implementation and migration, apart from realization and influence. A tool must keep derivations that always hold separate from those that hold only for particular models.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.