LiveLink™ adds the Excel® workbook (.xlsx) format to the list of formats for loading and saving model definitions from the COMSOL Desktop®. Note that it is not required to have Excel installed on the machine where the COMSOL is running. If you are using Windows and have a supported version of Excel installed you will have some extra features that are not provided otherwise. Read this chapter for a description of how to load and save tabular data to a workbook.