| Subject | English | Welsh |
| comp., MS | Program Compatibility troubleshooter | Datryswr Problemau Cydnawsedd Rhaglenni (An easy-to-use troubleshooter that helps find and fix program compatibility issues) |
| comp., MS | program event | digwyddiad rhaglen (An action or occurrence to which a program might respond. Examples include state changes, data transfers, key presses, and mouse movements) |