Can you imagine if you had to repeat something forever and ever? Hopefully you'll never have
to because computers are really good at repeating things. This is the "repeat forever" block.
Anything inside this block will happen forever in the game. So if we wanted an actor to do
something repeatedly without the player having to do anything, we'll put those blocks inside
the "repeat forever" block. In this next puzzle, our goal is to help Anna walk up and down
continuously. Learning how the repeat commands work will save you a ton of time later when
you build your own game.