Modular Document Types

Most W3C document types are modular:

• XHTML 1.1, SMIL 2.0, SVG 1.1,
• but also CSS3, DOM

Modules are used to subset specifications (profiles)

• XHTML Basic, SMIL Basic, SVG Tiny, SVG Basic, XForms 1.0 Basic

Modules are used to define compound document types

• e.g. XHTML+MathML+SVG, SVG+SMILanim, SVG+XForms, HTML+SMIL,...