In many cases, you have a small number of key driving cells that, when changed, have large impacts to your work. For example, a key price-per-unit value, or projected customer growth rate. Toggling between worksheets, or scrolling to locate these key value cells slows you down. PowerPane for Excel lets you designate certain cells as "Key Value Cells" that you will be able to update no matter where you are in your workbook. Changes you make in the PowerPane modify the source cell and automatically recalculate your workbook.