gack
Gack is the boring, fake stuff you use in a design because it looks cool until you replace it with the real thing.
My teacher used gack in our poster. It was just random letters that looked like they came from a broken typewriter.
They used gack in the movie set. It was a bunch of fake boxes that looked like they were from the 80s.
My design project had gack in it. It was just a bunch of random shapes that didn’t mean anything.