ETC Name
      
       ETC Purpose
      
       Return estimated time to completion in seconds.
Category
Calling Sequence
      
       stc = etc( fr ) Inputs
             fr = fraction of work done.             in
Keyword Parameters
Keywords
        
        DELTA=d  interval in seconds for rate estimation (def=10).
          
          DELTA must be given on each call. 
        
        /STATUS means display job status (at [10,12]).
        
        STATUS=[x,y] display at column x, line y (from 1 at top).
Outputs
      
       stc = estimated seconds to completion.  out
Common Blocks
              etc_com
Notes
      
       Notes: Call with fr=0 to initialize.
Modification History
      
       R. Sterner, 25 Mar, 1993 
      
       R. Sterner, 1995 Jan 19 --- Added STATUS=[x,y]
      
       R. Sterner, 1995 Feb  9 --- Upgraded intermediate estimates.
      
       R. Sterner, 2004 Jul 07 --- Fixed for modified timer routine.
      
       R. Sterner, 2010 Jul 13 --- Converted arrays from () to []. 
  
 Copyright (C) 1993, Johns Hopkins University/Applied Physics Laboratory
  
 This software may be used, copied, or redistributed as long as it is not
  
 sold and this copyright notice is reproduced on each copy made.  This
  
 routine is provided as is without any express or implied warranties
  
 whatsoever.  Other limitations apply as described in the file disclaimer.txt.