| Subject | English | German |
| IT, dat.proc. | code extension | Codeerweiterung |
| busin., IT | code extension | Code-Erweiterung |
| IT, tech. | code extension character | Codesteuerzeichen |
| commun. | code extension character | Codesteuerzeichen (DP) |
| comp. | extension code | Erweiterungscode |
| comp., MS | managed code extension | Erweiterung durch verwalteten Code (An application-level add-in or document-level customization. Generally, an extension to Microsoft Office that is created by using Visual Studio Tools for Office) |