The point of the game is that it eventually gets very frantic and difficult to keep up even for a fast typist. Having buttons to automatically insert the commands kind of goes against that goal
i dont think they meant something to type for you, just a little reminder display so you dont forget the commands! games like Receiver 2 have complex inputs and display all the actions in the corner, or something like the rulebook that you can leave open in Papers Please mightve been helpful