All commercial flights are conducted on an IFR flight plan and clearance with approved instrument approach procedures, with policy for any authorised VFR portions; guidance covers standard radio phraseology, readback and clarification of clearances, maintaining a listening watch, operations into uncontrolled airspace or airports, differences between airspace rules including local versus ICAO procedures, and strategic lateral offset procedures where published (FLT 3.10.1 to 3.10.8).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.