This does not appear to have immediate words so you can't define your own compile time words or control flow words. That is like making a lisp without macros -

This does not appear to have immediate words so you can't define your own compile time words or control flow words. That is like making a lisp without macros - it takes away a lot of the fun. I suspect the reason is because it compiles the code in one step whereas immediate words need to run at compile time.