| Subject | English | German |
| comp., MS | external key file | externe Schlüsseldatei (A file that contains the external key and is stored on an external media device. The name and contents of the file are internal to Microsoft and can change from version to version) |
| earth.sc., life.sc. | file key | Ordnungsschlüssel |
| gen. | key file | Schlüsselfeile |
| tech. | key file set | Schlüsselfeilensatz |