With the Calculator alternative (shortcut key Shift+F9) you can in any entry field open a small calculator. This calculator has ten rows in which you can enter different calculations and make trial calculations. You can also enter the number of decimals used. By selecting a row in the window and clicking OK, the result will be copied from the calculation and pasted into the field in question. The calculator also contains the buttons Cancel and Purge. By using the Purge button you can purge previously used calculation expressions. When purging, the calculator will be empty the next time you open it.