XML and HTML
- HyperText Markup Language (HTML)
- recommendation of W3C (version 4.01)
- designed as an application of SGML (not XML)
- simple, easy to create
- (partial?) support in browsers, editors
- mixes description of structure and presentation
- Browsers
- permissive – will display invalid HTML
- support proprietary extensions
- Context
- explosion of Web
- new devices