Buttons

This button is used to save any changes you have made. If no changes have been made, the visual will not respond, as there are no changes to save.

This button will reset all the changes you have made to the cells. If you want to start over, simply click this button, and all your changes will be cleared.

This button allows you to reverse the last change you made. If you don't want to reset all your changes, click this button to undo the most recent change. You can continue clicking Undo to revert additional changes, one at a time, until all changes have been undone.

This button is similar to the Undo button but functions in the opposite direction. If you have undone changes and decide that you want to restore some of them, click the Redo button to reapply the changes. This will move forward through your changes, effectively redoing them.

If you undo some of your changes and you put some new values the redo will not function because the values that you have undo will be deleted from the history of the changes you have made.