Just click the flag and watch till the end (use turbo mode [shift+flag] to make it real). Seeing inside the project will be a few lines. But if you ever show the sprite, you will see the printer
Flashes may hurt peoples eyes who are light sensitive. All with the help of 1 sprite and 1 custom extension. Wait till the closer parts near the end. you will know the end when the whole thing turns dark and freezes and 'pop' sound plays. When it starts to change color really fast, it's arranging and stamping that 1 sprite over and over again till end point. The story is: I was going to make a canvas maker till I messed something up. So then I removed all the buttons and stuff and made it all start by just 1 block powered by 1 button, flag.