This table describes the VT100 and VT220 control character keywords.
| Control character description | Key pressed with CTRL key down | Keyword | Hex character transmitted |
|---|---|---|---|
| Null | Spacebar | *NUL | X'00' |
| Start of heading | A | *SOH,*CTLA | X'01' |
| Start of text | B | *STX,*CTLB | X'02' |
| End of text | C | *ETX,*CTLC | X'03' |
| End of transmission | D | *EOT,*CTLD | X'04' |
| Enquire | E | *ENQ,*CTLE | X'05' |
| Acknowledge | F | *ACK,*CTLF | X'06' |
| Bell | G | *BEL,*CTLG | X'07' |
| Back Space | H | *BS,*CTLH | X'08' |
| Horizontal tabulation | I | *HT,*CTLI | X'09' |
| Line feed | J | *LF,*CTLJ | X'0A' |
| Vertical tab | K | *VT,*CTLK | X'0B' |
| Form feed | L | *FF,*CTLL | X'0C' |
| Carriage return | M | *CR,*CTLM | X'0D' |
| Shift out | N | *SO,*CTLN | X'0E' |
| Shift in | O | *SI,*CTLO | X'0F' |
| Data link escape | P | *DLE,*CTLP | X'10' |
| Device control 1 | Q | *DC1,*CTLQ | X'11' |
| Device control 2 | R | *DC2,*CTLR | X'12' |
| Device control 3 | S | *DC3,*CTLS | X'13' |
| Device control 4 | T | *DC4,*CTLT | X'14' |
| Negative acknowledgement | U | *NAK,*CTLU | X'15' |
| Synchronous idle | V | *SYN,*CTLV | X'16' |
| End of transmission block | W | *ETB,*CTLW | X'17' |
| Cancel previous word or character | X | *CAN,*CTLX | X'18' |
| End of medium | Y | *EM,*CTLY | X'19' |
| Substitute | Z | *SUB,*CTLZ | X'1A' |
| Escape | [ | *ESC | X'1B' |
| File separator | \ | *FS | X'1C' |
| Group separator | ] | *GS | X'1D' |
| Record separator | &eqv. | *RS | X'1E' |
| Unit separator | ? | *US | X'1F' |
| Delete | *DEL | X'7F' |