Usage:
      bufralter.pl <bufr file>
          [--data <descriptor=value[+]>]
          [--bufr_edition <value>]
          [--centre <value>]
          [--subcentre <value>]
          [--update_number <value>]
          [--category <value>]
          [--subcategory <value>]
          [--int_subcategory <value>]
          [--loc_subcategory <value>]
          [--master_table_version <value>]
          [--local_table_version <value>]
          [--year <value>]
          [--year_of_century <value>]
          [--month <value>]
          [--day <value>]
          [--hour <value>]
          [--minute <value>]
          [--second <value>]
          [--observed 0|1]
          [--compress 0|1]
          [--remove_sec2]
          [--remove_qc]
          [--outfile <file>]
          [--strict_checking n]
          [--tableformat <BUFRDC|ECCODES>]
          [--tablepath <path to BUFR tables>]
          [--verbose n]
          [--help]