Has anyone seen the Airshow display on flights? Sometimes during the flight, a white circle appears over a point on a map, and on the bottom of the screen, a text indicates where the circle is -- the geographical name.
Does anyone know what this circle is meant to represent, or is it just randomly chosen by the computer as a nearby point. At first I thought that they might be the currently-tracking VOR by the aircraft, but even on oceanic flights, far beyond navaid range, sometimes, there is a circle still. Also, some of the names do not correspond to any navaid.
The circle always appears on land, never in water.