[1] IRC logs: freenode / #whatwg / 20090814 (2009-10-11 01:23:39 +09:00 版) <http://krijnhoetmer.nl/irc-logs/whatwg/20090814#l-565>

[2] (X)HTML5 Tracking (2009-10-23 23:17:47 +09:00 版) <http://html5.org/tools/web-apps-tracker?from=4275&to=4276>

[3] (X)HTML5 Tracking (2010-01-05 10:50:33 +09:00 版) <http://html5.org/tools/web-apps-tracker?from=4460&to=4461>

[4] [whatwg] metadata attribute for media ( (2012-12-12 00:58:48 +09:00 版)) <http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2012-December/038315.html>

[5] [whatwg] metadata attribute for media ( (2012-06-29 08:17:05 +09:00 版)) <http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2012-June/036352.html>

[6] 169337 – Drop support for non-standard document.all.tags() (2017-04-19 10:26:45 +09:00) <https://bugs.webkit.org/show_bug.cgi?id=169337>