Article 21 provides that an importer or distributor is considered to be the manufacturer for the purposes of the Regulation, and is subject to the corresponding obligations, where the importer or distributor places a PDE on the market under their own name or trademark, or substantially modifies a PDE already placed on the market. Article 22 covers other cases where manufacturer obligations apply (open-source contributions integrated into a commercial PDE by the manufacturer).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.