46]</b></a></dt>

<dd><a href="http://www.ietf.org/rfc/rfc2046.txt">"RFC2046: Multipurpose Internet Mail Extensions (MIME) Part
Two: Media Types"</a>, N. Freed and N. Borenstein, November
1996.<br />
Available at <a href="http://www.ietf.org/rfc/rfc2046.txt">
http://www.ietf.org/rfc/rfc2046.txt</a>. Note that this RFC
obsoletes RFC1521, RFC1522, and RFC1590.</dd>

<dt><a name="ref-rfc2119" id="ref-rfc2119"><b>
[RFC2119]</b></a></dt>

<dd><a href="http://www.ietf.org/rfc/rfc2119.txt">"RFC2119: Key words for 