public string ExportCoordSysToFile( HorizontalCoordSys horizCoordSys, VerticalCoordSys vertCoordSys, string fileName, bool append = false )
The ExportCoordSysToFile method save the specified HorizontalCoordSys, and optionally, VerticalCoordSys, to a file. The Coordinate System is composed into the form of a Well-Known-Text (WKT) string, which is returned by the method and written to the file at fileName. The optional fourth argument determines whether to append the definition string to the output file if the latter already exists.