Is HTML 5 case sensitive?

Related questions

1. Does html5 support offline storage?
2. How do I know html5?
3. What is doctype >? Is it necessary to use in html5?
4. What is doctype is it necessary to use in html5?
5. Why doctype is used in XML?
6. How can we create doctype in html5?
7. Is html5 compatible with older browsers?
8. Does html5 need doctype?
9. What is doctype in XML?
10. What is the difference between HTML and html5?

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4. #markup
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7. #strict
8. #html5
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