Control Characters
| Abbrev | Description | Dec | Hex | Oct | Control-Key |
|---|---|---|---|---|---|
| NUL | Null | 0 | 00 | 000 | Ctrl-@ |
| SOH | Start of Heading | 1 | 01 | 001 | Ctrl-a |
| STX | Start of Text | 2 | 02 | 002 | Ctrl-b |
| ETX | End of Text | 3 | 03 | 003 | Ctrl-c |
| EOT | End of Transmission | 4 | 04 | 004 | Ctrl-d |
| ENQ | Enquiry | 5 | 05 | 005 | Ctrl-e |
| ACK | Acknowledgment | 6 | 06 | 006 | Ctrl-f |
| BEL | Bell | 7 | 07 | 007 | Ctrl-g |
| BS | Backspace | 8 | 08 | 010 | Ctrl-h |
| HT | Horizontal Tab | 9 | 09 | 011 | Ctrl-i |
| LF | Line Feed | 10 | 0a | 012 | Ctrl-j |
| VT | Vertical Tab | 11 | 0b | 013 | Ctrl-k |
| FF | Form Feed | 12 | 0c | 014 | Ctrl-l |
| CR | Carriage Return | 13 | 0d | 015 | Ctrl-m |
| SO | Shift Out | 14 | 0e | 016 | Ctrl-n |
| SI | Shift In | 15 | 0f | 017 | Ctrl-o |
| DLE | Data Link Escape | 16 | 10 | 020 | Ctrl-p |
| DC1 | XON / Device Control 1 | 17 | 11 | 021 | Ctrl-q |
| DC2 | Device Control 2 | 18 | 12 | 022 | Ctrl-r |
| DC3 | XOFF / Device Control 3 | 19 | 13 | 023 | Ctrl-s |
| DC4 | Device Control 4 | 20 | 14 | 024 | Ctrl-t |
| NAK | Negative Acknowledgement | 21 | 15 | 025 | Ctrl-u |
| SYN | Synchronous Idle | 22 | 16 | 026 | Ctrl-v |
| ETB | End of Transmit Block | 23 | 17 | 027 | Ctrl-w |
| CAN | Cancel | 24 | 18 | 030 | Ctrl-x |
| EM | End of Medium | 25 | 19 | 031 | Ctrl-y |
| SUB | Substitute | 26 | 1a | 032 | Ctrl-z |
| ESC | Escape | 27 | 1b | 033 | Ctrl-[ |
| FS | File Separator | 28 | 1c | 034 | Ctrl-\ |
| GS | Group Separator | 29 | 1d | 035 | Ctrl-] |
| RS | Record Separator | 30 | 1e | 036 | Ctrl-^ |
| US | Unit Separator | 31 | 1f | 037 | Ctrl-_ |
| DEL | Delete | 127 | 7f | 177 | Ctrl-? |