LOAD /PLANES

        [DISPLAY\]LOAD File /PLANES Min Max

    Read  only the last axis "planes" between the  First and Last implied by Min
    and Max. For an LMV-ordered cube, this would be equivalent to
          LOAD File /RANGE Min Max CHANNEL
    However, for transposed data cubes, VML or LVM-ordered for example, this  is
    not  true  at  all  when  a Frequency/Velocity axis is present: /RANGE would
    specify a subset of that axis, while /PLANES always indicate a subset of the
    3rd axis of the cube.

    Min and Max indicate offsets from Plane 1 and the number of  planes  Nplane.
    Thus  Max  can be negative: it then indicates Last = Nplane-Max.  Also Min=0
    and Max=0 implies loading all the channels.