These are Excel data files (.xls) that demonstrate the add-ins. Most of them are illustrated in the Computations section of this site. Some of the files have been compressed and stored with the (.zip) suffix. Download by clicking on the add-in name. The files may be expanded with the free Aladdin Expander. Save these files to a folder to your hard disk so you can view and change the files. The files are also included in the jensen.lib archive.