What is MMAP system call?

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1. #demand
2. #mapped
3. #because
4. #method
5. #implements
6. #initially
7. #memory
8. #system
9. #paging
10. #encyclopedia
11. #devices
12. #physical
13. #contents
14. #computing
15. #compliant
16. #directly
17. #posix
18. #wikipedia
19. #files