code: def main(sys=sys):
      
      if len(sys.argv) != 2:
          sys.stderr.write(USAGE)
          return 1
      EliotFilter(sys.argv[1], sys.stdin, sys.stdout).run()
      return 0
docs: Run the program.
  
      Accept arguments from L{sys.argv}, read from L{sys.stdin}, write to
      L{sys.stdout}.
  
      @param sys: An object with same interface and defaulting to the L{sys}
          module.