import GameServer.Commands DefinitionDoc MyNat as "ℕ" " The Natural Numbers. ## Game Modifications This notation is for our own version of the natural numbers, called `MyNat`. The natural numbers implemented in Lean's core are called `Nat`. If you end up getting someting of type `Nat` in this game, you probably need to write `(4 : ℕ)` to force it to be of type `MyNat`. "