Medlin programs have a built in, four function, pop-up calculator that works like a standard pocket calculator (if there is such a thing).

•Press the <F10> key to display the calculator.

•Enter a number and use the <+> and <-> keys to add and subtract.

•To multiply or divide, use the <*> or </> keys and then the <Enter> or <=>.

•To paste the result, click the 'Paste' button, or press the <=> key twice.

•The calculator's tape can be printed by clicking the 'Print' button.