This "quick tutorial" introduces the general idea of a call and explains the most common cases. It does not explain or illustrate all cases. For additional details and/or examples, refer to the links in the "MORE INFO" box.
Often multiple dancers standing side by side will be doing a Pass Thru at the same time. In this kind of situation, they must first drop hands. When they get to the other side they are each directly back-to-back with the person they had been facing, and they take hands again.