NAME: 
  tvmaps
 PURPOSE:
  Display a full set of Pluto/Charon model .til maps on the current display.
 DESCRIPTION:
  This is a simple tool to help view the version 2 MaxEnt map tiling format
    that is more fully described in readtil.pro.  Both the default image
    and the reconstructed image are shown.
 CATEGORY:
  Miscellaneous
 CALLING SEQUENCE:
  tvmaps,root,scale,pluto,charon,pldef,chdef
 INPUTS:
  root - String, with the root of the file names to be read.  This program
           expects to file a .til and .def file pair and you are providing
           the common part of the name.
  scale - Scaling factor, positive definite integer.
 OPTIONAL INPUT PARAMETERS:
 KEYWORD INPUT PARAMETERS:
 OUTPUTS:
  pluto - This is the Pluto map in the tiled format.  The length of the array
             defines the attributes of the map and the value is usually the
             single-scattering albedo.
  charon - Charon map, similar to Pluto.  May or may not be the same size as
             Pluto.
  pldef - This is the default map for Pluto.  This is used by the MaxEnt
             fitting program to indicate what should be used in regions where
             there are little to no constraints.
  chdef - This is the default map for Charon.

 KEYWORD OUTPUT PARAMETERS:
 COMMON BLOCKS:
 SIDE EFFECTS:
 RESTRICTIONS:
 PROCEDURE:
 MODIFICATION HISTORY:
  1997/06/21, Written by Marc W. Buie, Lowell Observatory
  2023/02/27, MWB, added documentation and some cosmetic improvements.