A new sub-characteristic. It describes how far a user can intervene in the system's functioning in a timely way. It matters where unexpected behaviour cannot be ruled out and someone has to step in. The second edition places it under interaction capability, defines a controller and a control point, and treats taking over control as an event that has to be designed. The first edition placed it under usability.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.