[1] IRC logs: freenode / #whatwg / 20100520 (2010-06-09 21:59:51 +09:00 版) http://krijnhoetmer.nl/irc-logs/whatwg/20100520#l-337

[2] Content Security Policy Level 3 (2016-08-01 18:14:23 +09:00) https://www.w3.org/TR/2016/WD-CSP3-20160801/