gboolean force_ele; /// Force ele field
gboolean force_time; /// Force time field
gboolean hidden; /// Write invisible tracks/waypoints (default is yes)
gboolean force_ele; /// Force ele field
gboolean force_time; /// Force time field
gboolean hidden; /// Write invisible tracks/waypoints (default is yes)
void a_gpx_write_file ( VikTrwLayer *trw, FILE *f, GpxWritingOptions *options );
void a_gpx_write_track_file ( VikTrack *trk, FILE *f, GpxWritingOptions *options );
void a_gpx_write_file ( VikTrwLayer *trw, FILE *f, GpxWritingOptions *options );
void a_gpx_write_track_file ( VikTrack *trk, FILE *f, GpxWritingOptions *options );