| Subject | English | Thesaurus |
| avia. | alphanumeric characters | A collective term for letters and figures (digits). |
| abbr., file.ext. | Ascii text IBM8 character set | PC8 (NewWave Write) |
| abbr., file.ext. | Ascii text with ANSI character set | ANS (NewWave Write) |
| mil., abbr. | Character-Oriented Messages | COM |
| chat., abbr. | In Character Message Board | ICMB |
| abbr. | Start Of Header, ASCII control character | SOH (dec=01,control-A) |
| abbr., progr. | text character | text symbol (ssn) |
| abbr., file.ext. | Text in HP Roman8 character set | HP8 |