VT100.net: Digital VT102 User Guide

Table 5-2 Control Characters Recognized by VT102
Character	Mnemonic	Octal Code	Function
Null	NUL	000	Ignored when received (not stored in input buffer) and used as a fill character.
End of text	ETX	003	Can be selected as a half-duplex turnaround character.
End of transmission	EOT	004	Can be selected as a disconnect character or half-duplex turnaround character. When used as a turnaround character, the disconnect character is DLE-EOT.
Enquire	ENQ	005	Transmits answerback message.
Bell	BEL	007	Generates bell tone.
Backspace	BS	010	Moves cursor to the left one character position; if cursor is at left margin, no action occurs.
Horizontal tab	HT	011	Moves cursor to next tab stop, or to right margin if there are no more tab stops.
Linefeed	LF	012	Causes a linefeed or a new line operation. (See Linefeed/New Line). Also causes printing if auto print operation is selected.
Vertical tab	VT	013	Processed as LF.
Form feed	FF	014	Processed as LF. FF can also be selected as a half-duplex turnaround character.
Carriage return	CR	015	Moves cursor to left margin on current line. CR can also be selected as a half-duplex turnaround character.
Shift out	SO	016	Selects G1 character set designated by a select character set sequence.
Shift in	SI	017	Selects G0 character set designated by a select character set sequence.
Device control 1	DC1	021	Processed as XON. DC1 causes terminal to continue transmitting characters.
Device control 3	DC3	023	Processed as XOFF. DC3 causes terminal to stop transmitting all characters except XOFF and XON. DC3 can also be selected as a half-duplex turnaround character.
Cancel	CAN	030	If received during an escape or control sequence, cancels the sequence and displays substitution character ().
Substitute	SUB	032	Processed as CAN.
Escape	ESC	033	Processed as a sequence introducer.