Suggestion for future release....

[webmasterpdx]

I found it worked fine. Having to press OK is fine too, as I'd hate to have made a typo and have to do it over. Typing on the calculator when you can't see the keys (due to the lousy color of the keys) is what slows you down more than anything else, so the "are you sure" question that annoys us on Windows is actually fine on the Prime....IMO.