NAME: 
  clnspec
 PURPOSE: 
  Interactive cleaning of bad pixels in an OSIRIS XD spectrum.
 DESCRIPTION:
  Plots one order at a time and allows cleaning up bad pixels.  The left
    mouse button is used to alternately mark bad pixels and then their new
    new value for visual interpolating.  The middle button causes the
    nearest point to be replaced by the average of its two nearest
    neighbors.  CLEANDAT is called on each order.
 CATEGORY:
  Spectroscopy
 CALLING SEQUENCE:
  clnspec,calib,spec
 INPUTS:
  calib- Anonymous structure containing all pertinent calibration
           information.  This structure is usually loaded beforehand using
           the routine, "ldcalir"
  spec - 1-D spectrum vector to be cleanded (will be modified in place).
 OPTIONAL INPUT PARAMETERS:
 KEYWORD INPUT PARAMETERS:
 OUTPUTS:
  spec - Cleaned 1-D spectrum vector
 KEYWORD OUTPUT PARAMETERS:
 COMMON BLOCKS:
 SIDE EFFECTS:
  Uses graphics window 6 and forces its size.  !p.multi is also set to 0.
 RESTRICTIONS:
 PROCEDURE:
 MODIFICATION HISTORY:
  95/09/15, Written by Marc W. Buie, Lowell Observatory
  96/05/28, MWB, added changes for new calib structure