What does exclamation mark mean cryptic crossword?

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Tags

1. #question
2. #clues
3. #words
4. #wordplay
5. #wicked
6. #indicator
7. #cryptic
8. #these
9. #usual
10. #example
11. #often
12. #exclamation
13. #candle
14. #there
15. #because
16. #sense
17. #definition
18. #groan
19. #thing