soll              158 core/gps.c     static t_geo soll;                                     // nominal position
soll              276 core/gps.c         soll.lat_w = g_d_lat_nav;
soll              277 core/gps.c         soll.lon_w = g_d_lon_nav;
soll              288 core/gps.c         geodiff                 (&ist, &soll, &delta);                          // Distance in degrees (N/E)