What is custom robots txt in Blogger?

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Tags

1. #engine
2. #links
3. #should
4. #included
5. #pages
6. #available
7. #restrict
8. #server
9. #blogger
10. #search
11. #robots
12. #website
13. #write
14. #which
15. #results
16. #directories
17. #means
18. #custom
19. #crawl