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.
To do a Trade By, the couples on the end, who are facing out, do a Partner Trade, while the couples in the center do a Pass Thru.
The result is that the end couples are still end couples, and the centers are still in the center, but the end couples are now facing the center couples.
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