What is the purpose of a screen saver?

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Tags

1. #saver
2. #blanks
3. #phosphor
4. #screensavers
5. #fills
6. #original
7. #monitors
8. #images
9. #moving
10. #computer
11. #patterns
12. #plasma
13. #purpose
14. #prevent
15. #hence
16. #program
17. #screen
18. #screensaver