Formula bar
Section in Microsoft Excel and other spreadsheets that shows the contents of the current cell and allows you to create and view formulas. In the two below pictures, are examples of what the formula bar looks like in Microsoft Excel. To start creating a formula click the mouse cursor in the formula bar and enter an equal sign (=). In both of the below examples, we're using the =SUM, which is telling Excel to add each of the cells.
Also see: Formula