This option sets the character encoding to use when reading and writing the file.
Encoding: UTF-8
No byte order markEncoding: UTF-8
Byte order mark: 0xEF 0xBB 0xBFEncoding: UTF-16 big-endian
Byte order mark: 0xFE 0xFFEncoding: UTF-16 little-endian
Byte order mark: 0xFF 0xFEEncoding: ISO-8859-1
No byte order mark