Reverse Polish LISP (or alternatively Reverse Polish Language) is the programming language used on modern Hewlett-Packardcalculators, such as the HP-48.
The similarities to actual LISP are very limited;
RPL does not even share LISP's heavy use of parentheses.
RPL actually resembles Forth more than any other programming language, due to their similar "stack-oriented," RPN-based operation.
