NAME: 
  tvtil
 PURPOSE: 
  Display a Pluto/Charon .til map as an image on the current display.
 DESCRIPTION:
 CATEGORY:
  Miscellaneous
 CALLING SEQUENCE:
 INPUTS:
 OPTIONAL INPUT PARAMETERS:
 KEYWORD INPUT PARAMETERS:
 OUTPUTS:
 KEYWORD OUTPUT PARAMETERS:
 COMMON BLOCKS:
 SIDE EFFECTS:
 RESTRICTIONS:
 PROCEDURE:
 MODIFICATION HISTORY:
  Sep 1991, Written by Marc W. Buie, Lowell Observatory