docs: def open_args(subparsers):
      """
      The `mp open` command will open a resource with the system application, such as Excel or OpenOffice
  
      """
      parser = subparsers.add_parser(
          'open',
          help='open a CSV resoruce with a system application',
          description=open_args.__doc__,
          formatter_class=argparse.RawDescriptionHelpFormatter,
      )
  
      parser.set_defaults(run_command=open_cmd)
  
      parser.add_argument('metatabfile', nargs='?',
                          help="Path or URL to a metatab file. If not provided, defaults to 'metadata.csv' ")
  
      return parser