To sum the values in a range of table cells
 Sum.
 Sum.The following prompt is displayed:
Select first corner of table cell range:
The following prompt is displayed:
Select second corner of table cell range:
The In-Place Text Editor opens and displays the formula in the cell.
The cell displays the sum of the values in the range of cells. Empty cells and cells that do not resolve to a numeric value are ignored.
 Formula
Formula Sum.
Sum.