. . . . . . . . . . . . "A Theme moves with respect to a Fixed_location, generally with a certain Periodicity, without undergoing unbounded translational motion or significant alteration of configuration/shape."^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "frame"^^ . . . . . . . . . . . .