2.2.1.2 Representation of the String Data Type

If a string can be represented exclusively by using printable characters from the ASCII character set, the string can be included in the .nsc file without being transformed. Otherwise, the string MUST be converted to the 16-bit Unicode character set (UTF-16). Each 16-bit symbol is encoded in little-endian byte order; and the UTF-16 string, including the null character that terminates the string, MUST be encoded as specified in section 2.2.1.3.