def next_tile(self): return [[world.next_tile("EmptyTile"), "Empty tile", "e"]]
def next_tile(self): return [[world.next_tile("HallidayIntro1"), "Next", "n"]]
def next_tile(self): return [[world.next_tile("The_Limerick"), "next", "n"], [world.next_tile("HallidayIntro2"), "Back", "b"]]