| Subject | English | Welsh |
| comp., MS | default workbook template | templed llyfr gwaith diofyn (The Book.xlt template that you create to change the default format of new workbooks. Excel uses the template to create a blank workbook when you start Excel or create a new workbook without specifying a template) |
| comp., MS | external workbook | llyfr gwaith allanol (A workbook, other than the active workbook, that is on disk or in memory and to which a dependency is implied or intended) |
| comp., MS | shared workbook | llyfr gwaith a rennir (A workbook that is configured to allow multiple users on a network to view and make changes at the same time. Each user who saves the workbook sees the changes that are made by other users) |
| comp., MS | workbook file | ffeil llyfr gwaith (A file that contains a byte stream representation of a workbook) |
| comp., MS | workbook object | gwrthrych llyfr gwaith (An object that is associated with a workbook) |
| comp., MS | workbook parameter | paramedr llyfr gwaith (A single cell that is designated to receive input from a user) |
| comp., MS | workbook view | gwedd llyfr gwaith (A set of display settings, such as the height and width, for the windows in a workbook) |
| comp., MS | workbook window | ffenestr llyfr gwaith (The window that contains the user's workbook of tabbed sheets) |