What is the function of overhead projector?

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Tags

1. #image
2. #minor
3. #together
4. #allow
5. #device
6. #these
7. #perform
8. #overhead
9. #bolts
10. #machine
11. #intended
12. #screws
13. #function
14. #projecting
15. #major
16. #components
17. #features
18. #projector
19. #screen
20. #parts