[1] [CITE@en[The subhead element - HTML extension specification]]
( ([TIME[2013-06-16 10:37:11 +09:00]] 版))
<http://rawgithub.com/w3c/subline/master/index.html>

[2] [CITE@en[Re: <subline> becomes <subhead> and other updates]]
( ([[Steve Faulkner]] 著, [TIME[2013-06-09 01:48:49 +09:00]] 版))
<http://lists.w3.org/Archives/Public/public-html/2013Jun/0025.html>