proj4.defs("EPSG:31256","+proj=tmerc +lat_0=0 +lon_0=16.3333333333333 +k=1 +x_0=0 +y_0=-5000000 +ellps=bessel +towgs84=439.5,-11.77,494.976,-0.026585,-4.65641,10.155824,16.270002 +units=m +no_defs +type=crs");