It's documented. There's a visual clue: see the arguments as books on a shelf and the pipe | as a bookend, when you remove the books, the bookend falls over - i

It's documented. There's a visual clue: see the arguments as books on a shelf and the pipe | as a bookend, when you remove the books, the bookend falls over - it's a visual thing and it's my attempt to use humor, so dont invite me to any parties.