The Show Change History button allows you to view changes made to keys for a specified time period. Clicking the dropdown box on the bottom half of the button allows you to choose to view all changes or those from the past 7, 30, or 365 days. The changes are view in the Customization Key Change History window that opens when you click an option. Clicking the top half of the Show Change History button shows a view of the previously selected time period. Double-click a row in the table to be redirected to that customization key where you can make changes if necessary. This table can be exported to Excel or to HTML by clicking the buttons in the lower right hand corner of the screen.