Before soliciting in door-to-door sales (sales away from business premises, and sales at the premises to people stopped in the street or lured there by the methods the Cabinet Order specifies, such as appointment sales), the seller or service provider tells the other party its name, that the purpose is to solicit a sales or service contract, and the kind of goods, rights or services concerned.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.