; CCBOX
;---------------------------------------------------------------
;! specifies pixel coordinates of subarrays of an image
;# ADVERB IMAGING
;-----------------------------------------------------------------------
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;-----------------------------------------------------------------------
;---------------------------------------------------------------
CCBOX     LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
----------------------------------------------------------------
CCBOX
Type: Adverb   (Real(4,10))
Use:  An array, dimensioned (4,10), containing 10 sets of
      of four numbers.  Each quartet represents a rectangle in
      an image.  The four numbers are Bottom Left Corner (X,Y)
      and Top Right Corner (X,Y) defining each rectangle.  The
      values are in arcseconds and are given relative to the
      reference position for the image. Note that the RA offset
      increases to the left.

      The adverb NCCBOX is used to designate the number of
      rectangles used in CCBOX.

      The procedure BOX2CC will set NCCBOX and CCBOX from
      NBOXES and BOX (which contains pixel coordinates).

Null value:   0
      Null value assignment varies with the verb or task.
----------------------------------------------------------------