They wasted ) to some shit. ( should have been push next word to X-stack and ) should have been pop and execute top of X-stack.

Then writing (+ m n) would be equal to m n + and (IF (< A B) (THEN C ELSE D))) would be identical to writing A B < IF C ELSE D THEN

But they also got rid of <BUILDS which one needs on Flash memory systems if you plan on using DOES> and avoiding CREATE’s extra writes.