The Tile action library is where you can find the actions required to get or set tile indices within a room, as well as change how they are shown:

	Set Tile At Pixel
	Get Tile At Pixel
	Set Tile In Cell
	Get Tile In Cell
	Set Tile Set
	Get Tilemap Variable
	Set Tile Data At Pixel
	Get Tile Data At Pixel
	Set Tile Data In Cell
	Get Tile Data In Cell
	Set Tile Data Transform
	Get Tile Data Transform