Using the Calculator with the Mouse
                        To click in the Calculator, use the left mouse
                           key. You can select the numbers, select the calculation method, and scroll the tape at the
                           top of the calculator. 
                        
                     
                     
                     Use these functions:
| Function | How to Activate | 
|---|---|
| Clear All | Click . | 
| Result | Click . | 
| Accept the result | Click . | 
| Close without saving | Click . |