In one sentence, describe what the following article is about:

The middle, or 13th pile has four cards: turn one of them over and place it on top of its stack. Look at the number or face-value of the card. The number or face will determine where the card goes. Starting with the 1 o'clock position, cards belong in the stack associated with their number: Aces go to the 1 o'clock pile, twos go to the 2 o'clock pile, threes go to the 3 o'clock pile, fours go to the 4 o'clock pile, fives go to the 5 o'clock pile, sixes go to the 6 o'clock pile, sevens go to the 7 o'clock pile, eights go to the 8 o'clock pile, nines go to the 9 o'clock pile, tens go to the 10 o'clock pile. For face cards, place the Jacks in the 11 o'clock pile and Queens in the 12 o'clock pile. Kings will be placed in the middle, or 13th pile. When you find the correct pile, slide the card face up, under the stack it belongs in. Turn over the top card of the pile you just played into. This becomes your next card in play. Place that card into the pile in which it belongs. For example, a 7 of diamonds would go facedown into the bottom of the 7 o'clock pile. A Queen of spades would go facedown at the bottom of the 12 o'clock pile. For each card that you turn over and place in the correct pile, flip over the next card from that pile and play it. Clock patience is a fun game to play quickly, so try to place the cards as quickly as you determine where they belong. Continue playing until there are no cards to flip over.
Play the first card. Move the card to its pile. Turn over the next card. Continue playing cards.