1 CIRCLE
        CIRCLE

    This program computes annular averages on an input cube to   produce  an
    output  map.   Each line of the output map is the radial profile for one
    particular plane of the input cube.  The task can be used to  derive the
    radial  profiles,  for  example  in circumstellar envelopes.  The radial
    pixel separation is always the X and  Y  increment.   If  the  X  and  Y
    increments  are  different,  the  averages  are  therefore  computed  on
    elliptical rings, despite the name of the task.
2 Y_NAME$
        TASK\FILE "Input cube" Y_NAME$

    The name of the input cube on which the circular averages are computed.
2 X_NAME$
        TASK\FILE "Output image" X_NAME$

    The name of the output image in which the circular averages are stored.
2 CENTER$
        TASK\REAL "Coordinates of centre" CENTER$[2]

    The X and Y user coordinates of the circle center.
2 PROFILE$
        TASK\INTEGER "Number of radii" PROFILE$

    The number of rings  for  which  an  average  value  is  computed.   The
    distance between successive rings is fixed by the X and Y increments.
1 END