- bool init( SGPath path );
-
- // query the database for the specified fix
- bool query( const string& ident, FGFix *f );
-
- // query the database for the specified fix, lon and lat are
- // in degrees, elev is in meters
- bool query_and_offset( const string& ident, double lon, double lat,
- double elev, FGFix *f, double *heading,
- double *dist );