Clause 6.9 deals with changes and revisions. The subject is change. A programme that meets the clause has a version for its rules, its criteria and each statement, and a route that tells the affected parties when one changes. This is the clause that makes a transition from one edition of ISO 14020 to the next manageable.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.