What is xhtml Why is xhtml needed?

Related questions

1. How xhtml is different from HTML?
2. What is difference between XML and xhtml?
3. How Shtml and xhtml differ from HTML?
4. Why doctype html is needed?
5. What is the w3c what is the Whatwg?
6. How xhtml is more advantageous than HTML?
7. Who made HTML 5?
8. Which is better xhtml or html5?
9. Is html and xhtml the same?
10. What is the main difference between HTML and XML?

Tags

1. #using
2. #structured
3. #xhtml
4. #gives
5. #future
6. #markup
7. #stands
8. #parsed
9. #cross
10. #between
11. #hypertext
12. #advantages
13. #rather
14. #browsers
15. #needed
16. #present
17. #easily
18. #language
19. #processed
20. #format
21. #webpages
22. #extensible
23. #consistent