proj4.defs("EPSG:6316","+proj=tmerc +lat_0=0 +lon_0=21 +k=0.9999 +x_0=7500000 +y_0=0 +ellps=bessel +towgs84=400.629,90.651,472.249,-3.261138,-5.263404,11.83739,20.022676 +units=m +no_defs +type=crs");