Import RealFlight Archive (RFX)- RFX is the file extension that is used for all files exported from RealFlight G4 & later versions. This menu option, (from the opening screen), allows you to import an RFX file. You will use this for all files that you have downloaded from the RC Flight School. After choosing the Import menu item, followed by the RealFlight Archive (RFX, G3X), you will be presented with an Open file dialog. Use this dialog to find the file that you want to import. Double-click the file or click the file and click Open. The import process will start immediately and once it’s finished you will see a message confirming its success. This customized version of the NexStar flies almost identically to the actual customized NexStar used by the UAV / RC Flight School. Happy Landings! Greg