| Subject | English | Hungarian |
| comp., MS | File Open Picker contract | megnyitási fájlválasztó egyezménye (A contract that enables developers to create apps that use the file picker to offer files to other apps) |
| chess.term. | half open file | félig nyitott vonal |
| gymn. | open file | nyitott oszlop |
| chess.term. | open file | nyitott vonal |
| comp., MS | Open Received Files | Fogadott fájlok megnyitása (An item on the File menu that opens files that the user has received via Communicator conversations) |
| comp., MS | Open Software Descriptor file | Open Software Descriptor fájl (An XML-based file that instructs the client on how to retrieve the sequenced application from the Application Virtualization Management/Streaming Server and how to run the sequenced application in its virtual environment) |