But in practice this character encoding is unused on the Internet .
IANA has registered the charset names ISO_6937 - 2 - 25 and ISO_6937 - 2 - add for two ( older ) versions of this standard ( plus control codes ) .
In practice this character encoding is unused on the Internet .
IANA has registered the charset names ISO_6937 - 2 - 25 and ISO_6937 - 2 - add for two ( older ) versions of this standard ( plus control codes ) .