anything you enter into it it scrambles for pseudo-random results. click on the cat to start, type your list, hit space when you think i long enough, and copy your results from the list. the longer you let it run the closer to random it is (if using for encryption algorithms on anything that matters, I would run it for at-least a few minutes to allow the keys to be more difficult to crack, as I do not know how reliable scratch is at generating "random" numbers)
I am using this for making encryption software if you would like a .txt file, right click the list, then click import,then save it cycles per second updates every five seconds