parser.add_option("-v", "--verbose", action="store_true", dest="verbose", default=False, help="show debugging information")
parser.add_option("-P", "--portable", action="store_true", dest="portable", default=False, help="portable wallet")
parser.add_option("-L", "--lang", dest="language", default=None, help="defaut language used in GUI")
+ parser.add_option("-u", "--usb", dest="bitkey", action="store_true", help="Turn on support for hardware wallets (EXPERIMENTAL)")
return parser