SPAN
Keywords: imager

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SPAN

              REAL SPAN[2]

        SPAN indicates the limits of plot along the velocity axis, when  one  of
        the plotted dimensions is Velocity. In particular, SPAN is used for SHOW
        PV.  The spatial dimension (if any is displayed) is controlled  by  SIZE
        and CENTER.

        Note  that  SPAN  differs from RANGE: RANGE controls the range of planes
        displayed for a 3-D cube.