CFS2 Utility - V4.2.4 Addit! Pro For Combat Flight Simulator 2 Addit! Pro is a comprehensive addon manager for Combat Flight Simulator 2. Easily install, manage and remove aircraft, campaigns, missions, panels, scenery, sounds, textures and more. Archive addons to Addit! Pro's File Cabinet or recreate them in zip files. Modify aircraft, panels and sounds. Addit! Pro can even automatically update CFS 2's scenery library (Scenery.cfg). By Joseph Stearns.