The /LOG qualifier outputs these informational messages to the
    current SYS$OUTPUT device:

    o  For each file processed, the name of the file and the number
       of records selected and rejected from that file

    o  If you use the /SORT qualifier, the total number of records
       merged in the sort (this is the total number of records
       selected from all the files that were processed)

    o  If you process more than one file, the total number of files
       that were processed, and the total number of records selected
       and rejected