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 . |