Aside: I'm sending this reply to TUHS where the message that I'm replying to came from. But i suspect that it should migrate to COFF, which I'm CCing. On 3/20/20 5:48 AM, paul(a)guertin.net wrote: Would you please elaborate on "it's just easier"? I'm asking from a point of genuine curiosity. I've heard many say that RPN is easier, or that it takes fewer keys, or otherwise superior to infix notation. But many of the conversations end up somewhat devolving into religious like comments about preferences, despite starting with honest open-minded intentions. (I hope this one doesn't similarly devolve.) I've heard that there are fewer keys to press for RPN, but the example equations presented have been effectively he same. I've heard that RPN is mentally easier. But I apparently don't know enough RPN to be able to think in RPN natively to evaluate myself. I dabble with RPN, including keeping my main calculator app on my smart phone in RPN mode. So I am genuinely interested in understanding why you say that RPN is just easier. ~chuckle~ ACK -- Grant. . . . unix || die