The XHTML FAQ answers many questions, including:
- Why is XHTML needed? Isn’t HTML good enough?
- What are the advantages of using XHTML rather than HTML?
- What is the easiest way to convert my HTML documents to XHTML?
- Why should I care if my document is in correct HTML? It displays all right on my browser.
- Where can I go to verify my document uses correct markup?
- Why do you say “user agent” everywhere, instead of “browser”?