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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.
In Roll Circulate is done from parallel waves, or other parallel lines where all the ends have the same shoulder toward the center of the set. The end of each line who is facing in does an ordinary Circulate, simply walking forward to become the end of the other line. All of the other dancers move one spot over toward the spot that had been occupied by the in-facing end, turning around halfway (180 degrees) at the same time.
In the case of parallel right-hand waves, every dancer will have moved one spot around the square in a clockwise direction. (In the case of parallel left-hand waves, they will all move one spot in a counter-clockwise direction.)
The "rolling" action for the three dancers who aren't in-facing ends is similar to a Run. Each of these dancers independently identifies the direction to move based on the location of the dancer who is leaving the line, and in one smooth motion starts turning and moving in that direction, stopping when they have moved over one spot and turned around halfway.
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