est Current Practice. URL: <a href="https://datatracker.ietf.org/doc/html/rfc2119">https://datatracker.ietf.org/doc/html/rfc2119</a></dd>
                    <dt id="bib-rfc8174">[RFC8174]</dt>
                    <dd><a href="https://datatracker.ietf.org/doc/html/rfc8174" rel="cito:citesAsAuthority"><cite>Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words</cite></a>. B. Leiba.  IETF. May 2017. Best Current Practice. URL: <a href="https://datatracker.ietf.org/doc/html/rfc8174">https://datatracker.iet