This screen shows the Combined Clearance Menu of the London Control simulation system.

It allows clearances such as climbs and descents, as well as navigation clearances and speed restrictions, to be input.

A climb clearance to Flight Level 310 is being input for flight ABD554, on track direct to Berry Head.

In the top-left corner, the Vertical Assistance Window can be seen. This shows potential conflicts with other flights that might affect the clearance being given to the selected aircraft.