VT100.net: Digital VT100 User Guide

Table 3-10 Control Characters
Control Character	Octal Code	Action Taken
NUL	000	Ignored on input (not stored in input buffer; see full duplex protocol).
ENQ	005	Transmit answerback message.
BEL	007	Sound bell tone from keyboard.
BS	010	Move the cursor to the left one character position, unless it is at the left margin, in which case no action occurs.
HT	011	Move the cursor to the next tab stop, or to the right margin if no further tab stops are present on the line.
LF	012	This code causes a line feed or a new line operation. (See new line mode).
VT	013	Interpreted as LF.
FF	014	Interpreted as LF.
CR	015	Move cursor to the left margin on the current line.
SO	016	Invoke G1 character set, as designated by SCS control sequence.
SI	017	Select G0 character set, as selected by ESC ( sequence.
XON	021	Causes terminal to resume transmission.
XOFF	023	Causes terminal to stop transmitted all codes except XOFF and XON.
CAN	030	If sent during a control sequence, the sequence is immediately terminated and not executed. It also causes the error character to be displayed.
SUB	032	Interpreted as CAN.
ESC	033	Invokes a control sequence.
DEL	177	Ignored on input (not stored in input buffer).