Parameters

 Keyword  Posn  Type        Description
 -------  ----  ----        -----------
 NFILES    1    INTEGER     Number of files to average
 FILE1     2    UNIV        Name of first input dataset
    - GLOBAL.BINDS (the current binned dataset)
 FILE2     3    UNIV        Name of second input dataset
   .
   .
 FILE20    21   UNIV        Name of 20th input dataset
 WTMETH         CHARACTER   Type of weighting to be applied
                            'U'=user supplied weighting
                            'V'=reciprocal of variance weighting
                            'N'=No weighting
 WEIGHT         REAL        Weighting factor for a given file
                            (only if WTMETH='U' selected)
 AVERAGE        Logical     By default the files are averaged.
                            However a sum of the files may be obtained
                            by setting 'AVERAGE=NO' on the command line
 OUTPUT         CHARACTER   Name of output data set
    -> GLOBAL.BINDS (the current binned dataset)