It is certainly noticeable. There are several prompts in the program I wrote. The print_slow is to differentiate and emphasize the new output from the output that was output previously. It is quite effective.

I tuned the speed so the messages require very little waiting, but the user can still tell what just printed to the screen. Sounds dumb, I know, but you have to see a whole run of the program before and after the print_slow implementation in order to understand. I suspect the IO:Prompt module had this functionality for the same reason.