What are Gherkin keywords?

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Tags

1. #specifications
2. #allowed
3. #english
4. #comment
5. #reference
6. #languages
7. #executable
8. #gherkin
9. #document
10. #spoken
11. #meaning
12. #special
13. #structure
14. #keyword
15. #lines
16. #keywords
17. #anywhere
18. #start
19. #translated