Laundry symbols will tell you not just how to wash, but also how to dry. First, determine whether the item should be air or tumble dried. The lines inside the square will tell you how an item should be air dried. (Surprisingly, there’s more than one way to do it.) If it can be tumble dried (dried in a dryer), the symbol will also tell you how. Just like with wash symbols, underscored lines indicate cycle and black dots represent temperature. Once again, the symbol will be X’d out if you shouldn’t tumble dry at all. If you're wondering if you should add dryer sheets to your load, read our article about what dryer sheets do.