Hello! I am looking for help when it comes to designing my own simple programming language. You see, I am trying to create my own DSL language that allows a driver to refuel their vehicle without having to leave the car. (I know that's what gas station attendants are for but pretend they don't exist) I want to base the language off of C++ and I was just looking for some ideas for where to start. If you could provide some use cases and formal specification of syntax that would be greatly appreciated..