Displays the reference for the current cell, the range of the selected cells, or the name of the area. You can also select a range of cells, and then type a name for that range into the Name Box.
Inserts the sum of a cell range into the current cell, or inserts sum values into selected cells. Click in a cell, click this icon, and optionally adjust the cell range. Or select some cells into which the sum values will be inserted, then click the icon.
Enter the formula that you want to add to the current cell. You can also click the Function Wizard icon to insert a predefined function into the formula.
