W3C - XML
XML:
- Extensible Markup Language
- Addresses HTML's lack of evolvability
- XML 1.0 Recommendation in Feb 1998
- Note well-formedness:
Make end-tags explicit: <LI>...</LI>
Make empty elements explicit: <IMG .../>
Quote attributes <IMG SRC="logo" HEIGHT="20"..
Use consistent upper/lower case
- and valid: