In the predecessor, the flush is user-activated (hand or automatic), a hand control sits within the figure zone or on the pan centre line within its height limits, clear of grabrails and backrest, proud of its surround and working before pressed flush; the paper dispenser outlet sits in its zone without encroaching on grabrail clearance.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.