ASCII:
• RFC20: ASCII format for network interchange.
• RFC294: The Use of "Set Data Type" Transaction in File Transfer Protocol.
• RFC338: EBCDIC/ASCII Mapping for Network
• RFC698: Telnet extended ASCII option.
• RFC1342: Representation of Non-ASCII Text in Internet Message Headers.
• RFC1842: ASCII Printable Characters-Based Chinese Character Encoding for Internet Messages.
• RFC1843: HZ - A Data Format for Exchanging Files of Arbitrarily Mixed Chinese and ASCII characters.
• RFC2047: MIME (Multipurpose Internet Mail Extensions) Part Three: Message Header Extensions for Non-ASCII Text.
• RFC3490: Internationalizing Domain Names in Applications (IDNA).