Paper | Classic retro game for the Commodore PET Computer (1979)

Yes, you too can be a famous wallpaper designer, proclaims the flyer. PAPER asks the user to supply four characters, and then generates a repeated wallpaper pattern on the screen, adding some additional room details in PETSCII: a door, light switch, table, electrical outlet, and a hideous portrait. (That thing in the bottom right corner is probably meant to be a dog with an animated wagging tail.) This program could benefit from some variety in its patterns. There is only one way that the PET will place the chosen characters in sequence, meaning once you've seen one pattern, you've kind of seen them all.