How did the box office get its name?

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Tags

1. #office
2. #private
3. #originated
4. #people
5. #called
6. #affluent
7. #theatre
8. #significant
9. #portion
10. #elizabethan
11. #would
12. #costlier
13. #watch
14. #tickets
15. #revenue
16. #boxes
17. #these