| Subject | English | Bulgarian |
| comp., MS | Backup Operators group | група на операторите с право на архивиране (A type of local or global group that contains the user rights you need to back up and restore files and folders. Members of the Backup Operators group can back up and restore files and folders regardless of ownership, permissions, encryption, or auditing settings) |
| cust. | Economic Operators Registration and Identification number | EORI номер |
| el. | European Network of Transmission System Operators for Electricity | Европейска мрежа на операторите на преносни системи за електроенергия |
| energ.ind. | European Network of Transmission System Operators for Gas | Европейска мрежа на операторите на преносни системи за газ |
| agric. | operators' organisation | организация на оператори |
| comp., MS | Server Operators group | Група на сървърни оператори (A group whose members can manage all domain controllers in a single domain. This group does not exist on workstations, stand-alone servers, or member servers. Administrative tasks that can be performed by members of this group include logging on locally, creating and deleting network shared resources, starting and stopping services, backing up and restoring files, formatting the hard disk of the computer, and shutting down the computer) |