[1] lauralemay :: essays :: Top Ten HTML Extensions that Didn't Make it Into Netscape 0.9 (2007-01-03 03:21:16 +09:00 版) <http://www.lauralemay.com/essays/topten.html> (名無しさん)

[2] Emacs-w3 User's Manual - Supported Markup Languages (1996-01-22 06:02:45 +09:00 版) <http://www.informatik.uni-hamburg.de/RZ/software/emacs/w3/w3_2.html#SEC6> (名無しさん)