XML describes structure and semantics not formatting XML documents form a tree Document Object Model (DOM) Element and attribute names reflect the kind of the element DTD Schema Formatting can be added with a style sheet Cascading Style Sheets(CSS) Extensible Stylesheet language(XSL) Languages for Semantic WebLanguages for Semantic Web 13 XML describes structure and semantics, not formatting • XML documents form a tree – Document Object Model (DOM) • Element and attribute names reflect the kind of the element – DTD, Schema • Formatting can be added with a style sheet – Cascading Style Sheets (CSS) – Extensible Stylesheet language (XSL)