Displays a list where you can show/hide the airspaces according to their type on the moving map. Use it as a filter of which type of airspaces you'd like to always see on the map and which ones not. There's also an Altitude filter, so you might choose from seeing all the existing airspaces in the zone you are flying or just the ones at your current altitude. Besides, you can fully-shade the airspaces and even display their names and show them in the Elevation Graph as shown on the screenshots below.