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   Draw a cube given its dimension. 
   Each axis face is colored the same.
   You can rotate the axes using the mouse.
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   Form:
   AnimateCube( action, x )
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   Inputs
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   action      (1,:) 'initialize', 'update', 'close'
   modifier    (1,:) [x,y,z] dimensions on initialize or tag otherwise
   x           (4,1) Quaternion  (used for update only)

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   Outputs
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   tag         (1,1) Returned on initialize

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