[1] [CITE[IRC logs: freenode / #whatwg / 20110412]]
( ([TIME[2011-04-16 19:46:57 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20110412>

[2] [CITE@en[Web Applications 1.0 r7230     Mention that 'direction' is supposed to affect <input type=range>]]
( ([TIME[2012-08-10 01:45:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=7229&to=7230>