What are documentaries used for?

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Tags

1. #archive
2. #material
3. #historical
4. #events
5. #additional
6. #archival
7. #filming
8. #without
9. #stock
10. #detail
11. #obtained
12. #library
13. #reconstructions
14. #documentaries
15. #inserted
16. #footage
17. #often
18. #documentary