| Subject | English | Italian |
| IT, dat.proc. | code extension | estensione di codice |
| IT, tech. | code extension character | carattere di conversione |
| IT, tech. | code extension character | carattere di cambio codice |
| comp., MS | managed code extension | estensione di codice gestito (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) |