About Steffen's Calculator
To use Steffen's Calculator, you can click on the buttons
or use the keyboard to enter numbers and 0perators. You can also use the
Tab key to move between buttons and press the Space Bar when you reach
the button that you want.
Any completed operation will be registered on "Tape". The "Tape"
reflects everything that you did since you started Steffen's Calculator
or since you last cleared the "Tape". The "Tape" has many useful functions.
You can print the "Tape", you can send the contents of the "Tape" to the
Clipboard or you can just browse the "Tape" to review your calculations.