0xF5 Abort Output.

0xF6 Are You Here?.

0xF3 NVT character BRK.

0xF2 Data Mark.

0xFD Do something.

0xFE Don't do something.

0xF7 Erase Character.

0xF8 Erase Line.

0xEF End Of Record.

0xF9 Go Ahead.

0xFF Interpret as Command.

0xF4 Interrupt Process.

0xEE (Linemode) Abort.

0xEC (Linemode) End Of File.

0xED (Linemode) Suspend.

0xF1 No Operation.

0x1D [RFC1041] Telnet 3270 Regime.

0x25 [RFC2941] Authentication Option.

0x00 [RFC856] Binary Transmission.

0x13 [RFC735] Byte Macro.

0x30 [RFC2066] Charset Option.

0x32 [RFC2217] Com Port Control Option.

0x14 [RFC1043] Data Entry Terminal.

0x01 [RFC857] Echo.

0x26 [RFC2946] Encryption Option.

0x24 [RFC1408] Environment Option.

0x19 Negotiate About EOR.

0xFF Extended Options List.

0xC9 Generic MUD Communication Protocol.

0x35 [RFC2840] KERMIT Option.

0x21 [RFC1372] Remote Flow Control.

0x22 Linemode Option.

0x12 [RFC727] Logout.

0x55 MUD Client Compression Protocol.

0x56 MUD Client Compression Protocol 2.0.

0x46 MUD Server Status Protocol.

0x5B MUD eXtension Protocol.

0x04 [ ] Negotiate About Message Size.

0x0A [RFC652] Negotiate About Output Carriage-Return Disposition.

0x0D [RFC655] Negotiate About Output Formfeed Disposition.

0x0C [RFC654] Negotiate About Output Horizontal Tab Disposition.

0x0B [RFC653] Negotiate About Output Horizontal Tab Stops.

0x08 [NIC5005] Negotiate About Output Line Width.

0x10 [RFC658] Negotiate About Output Linefeed Disposition.

0x09 [NIC5005] Negotiate About Output Page Size.

0x0F [RFC657] Negotiate About Output Vertical Tab Disposition.

0x0E [RFC656] Negotiate About Output Vertical Tabstops.

0x1F [RFC1073] Negotiate About Window Size.

0x27 [RFC1572] New Environment.

0x1B [RFC933] Output Marking.

0x02 [NIC5005] Telnet Reconnection Option.

0x07 [RFC726] Remote Controlled Transmssion and Echoing.

0x03 [RFC858] Suppress GA (Go Ahead).

0x17 [RFC779] Send Location.

0x05 [RFC859] Status.

0x15 [RFC736] SUPDUP Display Protocol.

0x16 [RFC749] SUPDUP OUTPUT.

0x06 [RFC860] Timing Mark.

0x28 [RFC2355] TN3270 Enhancements.

0x20 [RFC1079] Terminal Speed.

0x1C [RFC946] Terminal Location Number.

0x18 [RFC1091] Terminal Type.

0x1A [RFC927] TACACS User Identification.

0x1E [RFC1053] X.3 PAD.

0x11 [RFC698] Extended ASCII.

0x29.

0x23 [RFC1096] X Display Location.

0x5D Zenith MUD Protocol.

0xFA Subnegotiation Begin.

0xF0 Subnegotiation End.

0xFB Will do something.

0xFC Won't do something.