This feature replaces the existing Change Airport Altitude function.  It is not possible to change the name or altitude of an airport via the normal addon scenery bgl file.  Unlike all the other changes you might make the airport identification and altitude properties are read from the first file loaded rather than the last.  So to get a change to be remembered we need to create a small Bgl file (often called a  stub or pre-load file) that contains this information and is stored in ..\Scenery\World\scenery.  This ensures that the pre-load file is read before any other files including the stock files.

ADE has always provided lists of objects.   There is now a new version that is much more flexible and customizable than the old one

ADE cannot make Freeway Traffic.  We use third party code to generate terrain elements.  It all works fine except for freeway traffic.  We have never been able to find out why. Now we have disabled freeway traffic all together until such time as we find an alternative method

This applies only to Prepar3D Version 2 and allows a runway surface to be made transparent.  Markings are still visible but appear over the underling surface

ADE uses a method to allow users to change the altitude of stock airports.  This involves generating a bgl file that is saved into ..\Scenery\World\scenery\.   Sometimes you might want to revert the airport project back to the stock altitude.  This article explains how to do it.

Note: This method will work only for stock airport where the altitude is revised after you install ADE version 1.61.5279  This is because of extra code needed in the project file related to the stock altitude.  If you have projects with revised altitude created by earlier versions then ADE won't offer this function.