What does backup mean on Utah real estate?

Related questions

1. Can a house be shown while under contract?
2. Do Realtors make a base salary?
3. Can a house seller back out of an offer?
4. Do Realtors get paid hourly?
5. Are real estate agents rich?
6. Is real estate a good career?
7. What's the difference between pending and under contract?
8. Can a buyer walk away at closing?
9. Can you just go to an open house?
10. How did Logan Utah get its name?

Tags

1. #falls
2. #willing
3. #offer
4. #accepted
5. #backup
6. #accept
7. #seller
8. #still
9. #escrow
10. #means