Article 20 governs the opening of proceedings. Article 21 enables the Commission to require information by simple request or by binding decision. Article 22 enables the Commission to interview persons. Article 23 enables the Commission to conduct unannounced inspections at the premises of undertakings, including the power to enter, examine and copy books and records, seal premises, interview personnel.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.