Do I need to print my Trenitalia ticket?

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Tags

1. #paper
2. #reference
3. #confirmation
4. #minutes
5. #which
6. #departure
7. #letter
8. #booking
9. #yourself
10. #station
11. #machine
12. #print
13. #email
14. #using
15. #sized
16. #renfe
17. #later
18. #attached
19. #ticket
20. #receive
21. #either
22. #before