In today's collaborative world the track changes in Excel worksheet is a useful feature. Combining conditional formatting and named ranges you can track cahnges that you make in Excel. Also you can use the standard feature under the review tab in Excel 2007 to highlight the chabnges or in Excel 2003 under the 'tools' menu item you can activate the track changes feature. You cal aslo follow who made changes to the worksheet and whether you wish to accept the changes or reject them.
