XHTML 1.0 – HTML Compatibility Guidelines
For example, when the href attribute of the a element refers to a CGI script that takes parameters, it must be expressed as http://my.site.dom/cgi-bin/myscript.pl?class=guest&name=user rather than as http://my.site.dom/cgi-bin/myscript.pl?class=guest&name=user.
XHTML1.0はここにあった。HTML5はどこ見ればいいのー？
HTML5
