ELI5: Explain Like I'm 5

RPL (programming language)

RPL stands for Reverse Polish Notation. It is a type of programming language used by computers. It is a mathematical way of writing a computer program. Instead of writing code with words like "if" or "for", you use symbols like + and -. The computer can then read and understand the program more easily. In RPL, you write instructions one at a time, and each instruction is written using symbols. This makes it faster and easier for the computer to understand what it needs to do.