A lawyer who helps two or more people who are not the lawyer's clients to resolve a dispute or other matter between them, as an arbitrator, mediator or in another neutral capacity, must tell unrepresented parties that the lawyer is not representing them and, where a party appears not to understand the role, must explain how a neutral differs from a lawyer who represents a client.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.