I like to fly float planes, and also add scenery for own use where small docks and airstrips are missing.. sometimes when I start Plan-G small blue aircraft icons appear when there is no addon scenery for a area which allows me to add a dock or whatever.. it appears that the zoom rate controls when these blue icons appear, but try as I will, they do not appear every time I fly and use plan-g. what controls the appearance of the icons please? Teecee.