"<device>:\t-s [[[<domain>]:][<bus>]:][<slot>][.[<func>]]\n"
"\t|\t-d [<vendor>]:[<device>]\n"
"<reg>:\t\t<number>[.(B|W|L)]\n"
"<device>:\t-s [[[<domain>]:][<bus>]:][<slot>][.[<func>]]\n"
"\t|\t-d [<vendor>]:[<device>]\n"
"<reg>:\t\t<number>[.(B|W|L)]\n"