What is checkin and checkout in TFS?

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Tags

1. #project
2. #control
3. #automatically
4. #checked
5. #check
6. #comment
7. #checkouts
8. #leave
9. #server
10. #there
11. #foundation
12. #version
13. #checkin
14. #edits
15. #solution
16. #checkout
17. #source
18. #tirubhaskar