Well Known Text
 
WKT Version 2
COORDINATEOPERATION["AGD66 to GDA94 (11)",VERSION["ICSM-Aus 0.1m"],SOURCECRS[GEOGCRS["AGD66",DATUM["Australian Geodetic Datum 1966",ELLIPSOID["Australian National Spheroid",6378160,298.25,LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",7003]],ID["EPSG",6202]],CS[ellipsoidal,2,ID["EPSG",6422]],AXIS["Geodetic latitude (Lat)",north],AXIS["Geodetic longitude (Lon)",east],ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",4202]]],TARGETCRS[GEOGCRS["GDA94",DATUM["Geocentric Datum of Australia 1994",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",7019]],ID["EPSG",6283]],CS[ellipsoidal,2,ID["EPSG",6422]],AXIS["Geodetic latitude (Lat)",north],AXIS["Geodetic longitude (Lon)",east],ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",4283]]],METHOD["NTv2",ID["EPSG",9615]],PARAMETERFILE["Latitude and longitude difference file","A66 National (13.09.01).gsb",ID["EPSG",8656]],OPERATIONACCURACY[0.5],ID["EPSG",1803]]