def METHOD_NAME():
    print >> sys.stderr, \
          """
    Usage:
          acrntrace_format.py [options] [formats] [trace_data]
          [options]
          -h: print this message
          Parses trace_data in binary format generated by acrntrace and
          reformats it according to the rules in the [formats] file.
          The rules in formats should have the format ({ and } show grouping
          and are not part of the syntax):
          {event_id}{whitespace}{text format string}
          The textual format string may include format specifiers, such as
          %(cpu)d, %(tsc)d, %(event)d, %(1)d, %(2)d, ....
          The 'd' format specifier outputs in decimal, alternatively 'x' will
          output in hexadecimal and 'o' will output in octal.
          These respectively correspond to the CPU number (cpu), timestamp
          counter (tsc), event ID (event) and the data logged in the trace file.
          There can be only one such rule for each type of event.
          """