11 廃止された機能

11.1 Obsolete but conforming features

11.1.1 Warnings for obsolete but conforming features

11.2 Non-conforming features

11.3 Requirements for implementations

11.3.1 applet 要素

11.3.2 marquee 要素

11.3.3 Frames

11.3.4 その他の要素、属性、API