@dsm@clew.lol @TheMadPirate@detroitriotcity.com @p@fsebugoutzone.org

The same thing that makes forth useful as a control language, and easy to implement; immediate execution upon encountering a word. You see it, you do it, no waiting, no deferring, no keep reading before you decide. Store 3, store 5, add them. Run forward, turn right, remember target, aim, shoot.

dc ++ it's my main calculator when I need one. Sometimes I use Emacs calc, which is also an RPN stack calculator.