How should nav tag be used?

Related questions

1. Can you have multiple NAV tags?
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5. What is meant by text wrapping?
6. What is behind text wrapping?
7. How do I align a text box to the left in CSS?
8. What is the difference between Square and tight text wrapping?
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Tags

1. #other
2. #menus
3. #element
4. #either
5. #links
6. #document
7. #blocks
8. #contents
9. #indexes
10. #within
11. #block
12. #html5
13. #examples
14. #tables
15. #navigation
16. #current
17. #define
18. #documents