ADDFILES   ADD FILE SERIES				    ADDFILES
                                                            9/24/81

PURPOSE:   Adds up a series of files, yielding an average image.

USAGE:     @ADDFILES
 

     	  ?ENTER FIRST IMAGE OF SERIES? SER004
     	  [Enter name of first file in the series.]

     	  ?NUMBER OF FIRST IMAGE? 4
     	  [Enter number of the first image.]

     	  ?NUMBER OF LAST IMAGE? 10
     	  [Enter number of the final image in the series.]

     	  ?AVERAGE IMAGE? AVG001
     	  [Enter the name of the average image.]