This format can...
read and write waypoints
read and write tracks
read and write routes
This format provides support for ascii files from Skyforce PC interface for Skymap IIIC, Skymap II (Version 4) and KMD 150. Our module was developed from their interface description.
Each kind of our basic GPS data (waypoints, routes, and tracks) is
stored in a separate file. Therefore you need three steps to
convert a complex format like GPX or GDB into skyforce.
gpsbabel -i gpx -f file.gpx -o skyforce -w -F waypoints.txt -r -F routes.txt -t -F tracks.txt