| Subject | English | Welsh |
| comp., MS | active document window | ffenestr dogfen weithredol (In an environment capable of displaying multiple on-screen windows, the window containing the document that will be affected by current cursor movements, commands, and text entry) |
| comp., MS | document window | ffenestr dogfen (In windowing environments, such as the Apple Macintosh and Microsoft Windows, an on-screen window (enclosed work area) in which the user can create, view, or work on a document) |