1 Introduction1.1 Where does this specification fit?1.2 Is this HTML5?1.3 Background1.4 Audience1.5 Scope1.6 History1.7 Design notes1.7.1 Serializability of script execution1.7.2 Compliance with other specifications1.7.3 Extensibility1.8 HTML vs XML syntax1.9 Structure of this specification1.9.1 How to read this specification1.9.2 Typographic conventions1.10 A quick introduction to HTML1.10.1 Writ