6
Netprog 2002  -  HTTP
HTML Limitations
–Lack of Extensibility
• No new tags/attributes allowed.
–Fixed Tag Structure
• Emphasis on presentation in markup.
–No Validation
• No data-checking or types.
•
•In contrast to SGML (Standard Generalized Markup Language).
•But SGML is too complex to be appealing.
• So, XML comes to the rescue.