riddlebox:~$ rfc -u
Must specify a # of the webserver listed in -w !!
        rfc -u #  sets the base URL to the number listed with -w
BaseURL is http://www.ietf.org/rfc/

riddlebox:~$ rfc -w
Use -u # to set the URL
1) http://www.ietf.org/rfc/
2) http://www.faqs.org/rfc/
3) http://www.isi.edu/in-notes/
4) http://ds.inernic.net/rfc/
5) http://www.cis.ohio-state.edu/htbin/rfc/
6) /local/path/to/rfcs/
BaseURL is http://www.ietf.org/rfc/

riddlebox:~$ rfc -u 3
BaseURL is http://www.isi.edu/in-notes/