On-screen markers are displayed at 1, 3, 5 and 7 metres for reference as rear proximity verification (CJ981E, CJ723E, CJ763E). The markers are designed in 7 patterns that correspond to the height at which the camera is installed on the vehicle. There are 7 screen marker patterns ranging from a height of 2 to approx. 3.5 metres (in steps of 25 cm). Furthermore, vertical and horizontal fine adjustment is possible.