What is the red button on BBC TV?

Related questions

1. Is the BBC red button in HD?
2. What does BBC channel stand for?
3. Can you get Sky Sports red button on virgin?
4. Is the Champions League final on TV?
5. How does Sky red button work?
6. Can you pay per match on BT Sport?
7. Is the Champions League final free to watch?
8. Can I watch BBC Scotland in England?
9. Can you watch Red Button sky go?
10. What channel number is BBC Sport?

Tags

1. #corner
2. #accessed
3. #pressing
4. #prompt
5. #content
6. #remote
7. #right
8. #available
9. #graphic
10. #interactive
11. #appear
12. #button
13. #watching
14. #cable
15. #freeview
16. #service
17. #satellite
18. #programme
19. #picture
20. #there
21. #television