What do letters in parentheses mean?

Related questions

1. What does TL mean on Instagram?
2. What is HMK in texting?
3. What does TL semicolon Dr mean?
4. What are Reddit pages called?
5. What is TIFU?
6. What does R mean on Reddit?
7. What is MRW Reddit?
8. What does Reddit mean?
9. What is TD Dr?
10. What does FIFY mean Reddit?

Tags

1. #enclose
2. #change
3. #quoting
4. #bracket
5. #employer
6. #capitalization
7. #former
8. #falsification
9. #record
10. #charged
11. #pronoun
12. #sentence
13. #letter
14. #changed
15. #material
16. #coaching
17. #within
18. #brackets
19. #espinoza