C1 Set
These are the most common extended control codes. If using the ISO/IEC 2022 extension mechanism, they are designated as the active C1 control character set with the sequence 0x1B 0x22 0x43 (ESC " C). Individual control functions can be accessed with the 7-bit equivalents 0x1B 0x40 through 0x1B 0x5F (ESC @ through ESC _).
| Esc+ | Dec | Hex | Acro | Name | Description |
|---|---|---|---|---|---|
| @ | 128 | 80 | PAD | Padding Character | Listed as XXX in Unicode. Not part of ISO/IEC 6429 (ECMA-48). |
| A | 129 | 81 | HOP | High Octet Preset | |
| B | 130 | 82 | BPH | Break Permitted Here | Follows a graphic character where a line break is permitted. Roughly equivalent to a soft hyphen except that the means for indicating a line break is not necessarily a hyphen. Not part of the first edition of ISO/IEC 6429. |
| C | 131 | 83 | NBH | No Break Here | Follows the graphic character that is not to be broken. Not part of the first edition of ISO/IEC 6429. |
| D | 132 | 84 | IND | Index | Move the active position one line down, to eliminate ambiguity about the meaning of LF. Deprecated in 1988 and withdrawn in 1992 from ISO/IEC 6429 (1986 and 1991 respectively for ECMA-48). |
| E | 133 | 85 | NEL | Next Line | Equivalent to CR+LF. Used to mark end-of-line on some IBM mainframes. |
| F | 134 | 86 | SSA | Start of Selected Area | Used by block-oriented terminals. |
| G | 135 | 87 | ESA | End of Selected Area | |
| H | 136 | 88 | HTS | Character Tabulation Set |
Causes a character tabulation stop to be set at the active position. |
| I | 137 | 89 | HTJ | Character Tabulation With Justification |
Similar to Character Tabulation, except that instead of spaces or lines being placed after the preceding characters until the next tab stop is reached, the spaces or lines are placed preceding the active field so that preceding graphic character is placed just before the next tab stop. |
| J | 138 | 8A | VTS | Line Tabulation Set |
Causes a line tabulation stop to be set at the active position. |
| K | 139 | 8B | PLD | Partial Line Forward |
Used to produce subscripts and superscripts in ISO/IEC 6429, e.g., in a printer. Subscripts use PLD text PLU while superscripts use PLU text PLD.. |
| L | 140 | 8C | PLU | Partial Line Backward |
|
| M | 141 | 8D | RI | Reverse Line Feed |
|
| N | 142 | 8E | SS2 | Single-Shift 2 | Next character invokes a graphic character from the G2 or G3 graphic sets respectively. In systems that conform to ISO/IEC 4873 (ECMA-43), even if a C1 set other than the default is used, these two octets may only be used for this purpose. |
| O | 143 | 8F | SS3 | Single-Shift 3 | |
| P | 144 | 90 | DCS | Device Control String | Followed by a string of printable characters (0x20 through 0x7E) and format effectors (0x08 through 0x0D), terminated by ST (0x9C). |
| Q | 145 | 91 | PU1 | Private Use 1 | Reserved for a function without standardized meaning for private use as required, subject to the prior agreement of the sender and the recipient of the data. |
| R | 146 | 92 | PU2 | Private Use 2 | |
| S | 147 | 93 | STS | Set Transmit State | |
| T | 148 | 94 | CCH | Cancel character | Destructive backspace, intended to eliminate ambiguity about meaning of BS. |
| U | 149 | 95 | MW | Message Waiting | |
| V | 150 | 96 | SPA | Start of Protected Area | Used by block-oriented terminals. |
| W | 151 | 97 | EPA | End of Protected Area | |
| X | 152 | 98 | SOS | Start of String | Followed by a control string terminated by ST (0x9C) that may contain any character except SOS or ST. Not part of the first edition of ISO/IEC 6429. |
| Y | 153 | 99 | SGCI | Single Graphic Character Introducer | Listed as XXX in Unicode. Not part of ISO/IEC 6429. |
| Z | 154 | 9A | SCI | Single Character Introducer | To be followed by a single printable character (0x20 through 0x7E) or format effector (0x08 through 0x0D). The intent was to provide a means by which a control function or a graphic character that would be available regardless of which graphic or control sets were in use could be defined. Definitions of what the following byte would invoke was never implemented in an international standard. Not part of the first edition of ISO/IEC 6429. |
| [ | 155 | 9B | CSI | Control Sequence Introducer | Used to introduce control sequences that take parameters. |
| \ | 156 | 9C | ST | String Terminator | |
| ] | 157 | 9D | OSC | Operating System Command | Followed by a string of printable characters (0x20 through 0x7E) and format effectors (0x08 through 0x0D), terminated by ST (0x9C). These three control codes were intended for use to allow in-band signaling of protocol information, but are rarely used for that purpose. |
| ^ | 158 | 9E | PM | Privacy Message | |
| _ | 159 | 9F | APC | Application Program Command |
Read more about this topic: C0 And C1 Control Codes
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