# File lib/drydock.rb, line 520
520:   def usage(msg)
521:     # The default value given by OptionParser starts with "Usage". That's how
522:     # we know we can clear it. 
523:     get_current_option_parser.banner = "" if get_current_option_parser.banner =~ /^Usage:/
524:     get_current_option_parser.banner << "USAGE: #{msg}" << $/
525:   end