*'''Home-made airports:''' if you created an airport in [[TaxiDraw]] or [[WorldEditor]], use the .dat file that you exported.
Use the button to browse to the .dat file of your choice. Select the format of your .dat file from the dropdown. TaxiDraw created 810 format, while WorldEditor does the 850 format. Apt.dat.gz packaged with FlightGear is currently still in the 810 format.
* '''All airports in area''' generates all the airports within the boundaries as set on the start tab.