To perform the following functions with the Calculator, use these keys:
Clear All - To clear the display and the ongoing calculation, type C.
Result - To see the result of the calculation, press Enter.
Accept the result - To close the calculator and enter the result in the form's field, tab to the OK key and press Enter.
Close without saving - To close the calculator and leave the form's field unchanged, press the Escape key.
Scroll the tape - To scroll the tape, move the cursor up or down, or press Page Up/Page Down. To move to the top or bottom of the tape, press the Home or End key.