es</span>

<span><a name="section-17.1" href="#section-17.1">17.1</a>. Normative References</span>

    [<a name="ref-WORDS" id="ref-WORDS">WORDS</a>]
        Bradner, S., &#34;Key words for use in RFCs to Indicate Requirement
        Levels&#34;, <a href="http://fakehost/test/bcp14">BCP 14</a>, <a href="http://fakehost/test/rfc2119">RFC 2119</a>, March 1997.


<span>de Jong                                                        [Page 20]</span>
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