What are tags in SVN?

Related questions

1. What is the difference between branch and tag?
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Tags

1. #mostly
2. #subversion
3. #create
4. #trunk
5. #released
6. #point
7. #between
8. #restore
9. #source
10. #based
11. #branch
12. #usage
13. #there
14. #categorized
15. #difference
16. #backup