How can I use my laptop as a main monitor?

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Tags

1. #power
2. #laptop
3. #click
4. #adjust
5. #external
6. #monitor
7. #empty
8. #alternatively
9. #resolution
10. #settings
11. #screen
12. #desktop
13. #start
14. #while
15. #windows
16. #select
17. #connect
18. #right
19. #viewing