[1] [CITE@en[RFC 5988 - Web Linking]]
( ([TIME[2012-03-22 09:19:11 +09:00]] 版))
<http://tools.ietf.org/html/rfc5988#page-16>

[2] [CITE[IRC logs: freenode / #whatwg / 20130306]]
( ([TIME[2013-03-18 20:29:40 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20130306#l-72>

[3] [CITE@en[Web Applications 1.0 r8316 Move away from angle brackets and towards proper Unicode characters, since Unicode font support is widespread now.]]
( ([TIME[2013-11-27 08:03:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=8315&to=8316>


[4] [TIME[2025-03-20T03:47:53.400Z]]

>
[PRE[
Link: <https://acme-v02.api.letsencrypt.org/directory>;rel="index", <https://acm
e-v02.api.letsencrypt.org/acme/authz/2291281821/493486773054>;rel="up"
]PRE]