This paper describes a possible formal
organizational device that serves to bound 
episodes of body movement such as gestures, 
fidgets, instrumental moves and the like. 
It involves a spate of movement -- whether 
a single move or a series of moves -- being
completed by returning the moving body part 
to the position from which it departed at 
the outset. A series of specimens are examined 
which display this organizational device across 
a number of dimensions of variation -- in the 
body part being moved, the characteristics of 
the mover, the amplitude of the move, etc.,
underscoring the formality and adaptability 
of the device. 

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