[1] Evil Tests: CSS Underlining (Ian Hickson 著, 2007-10-29 19:04:01 +09:00 版) <http://www.hixie.ch/tests/evil/mixed/underline.html> (名無しさん)

[2] Re: Text-Decoration (Ian Hickson 著, 2000-03-31 22:27:36 +09:00 版) <http://lists.w3.org/Archives/Public/www-style/2000Mar/0111.html> (名無しさん)

[3] CSS3 Text Module (2003-05-14 02:14:43 +09:00 版) <http://www.w3.org/TR/2003/CR-css3-text-20030514/#text-decoration-overview> (名無しさん)