| Subject | English | Welsh |
| comp., MS | add-in function | swyddogaeth ategyn (A worksheet function that is provided by an add-in, instead of being built-in) |
| comp., MS | built-in function | swyddogaeth barod (A function that is native to an application and is made available for use in formulas) |
| comp., MS | Excel Cube Functions | Ffwythiannau Ciwb Excel (Functions used to extract and display OLAP data (sets and values)) |
| comp., MS | pseudo-random function | swyddogaeth siwdo-ar-hap (A function that takes a key, label, and seed as input, then produces an output of arbitrary length) |
| comp., MS | summary function | ffwythiant crynodeb (A type of calculation that combines source data in a PivotTable report or a consolidation table, or when you are inserting automatic subtotals in a list or database) |