Development of Web

HTML
- Separate structure and presentation
- Accessibility
- HTML 4.01 is the current and final version of HTML
- HTML 4.01 has three DTDs
  - Strict
  - Transitonal
  - Frameset
XML
- New Standard for Internet Document
- Easy to process
- Mixing documents using namespace
- Generalize HTML ideas
  - Stylesheet: XSL, XSL-T
  - Hyperlink: XLink, XPointer
- XML Schema for more powerful constraint
- XML base Web document
  - XHTML
  - MathML
  - SVG
  - SMIL
Semantic Web
- Next Generation Web
- Machine can understand
- Metadata space