You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when does dealer have to stay in blackjack?" whose answer is 17 or more points.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when do dealers have to stay in blackjack
Useful Output:

Doc 1: If the total on their cards is 17 or above, the dealer must stand. Whereas if the total is 16 or under, they must hit and take another card. The dealer's
Doc 2: In general, if you have a hand that totals 17 or higher, you should stand. If your total is between 13 and 16, consider the dealer's up-card before deciding
Doc 3: If the dealer's total is 17 or higher, he has to stay. If his total is 16 or less, he has to hit. The dealer never gets to choose -- he must play by these
Doc 4: He always has to hit values below 16/17 (the exact number varies by casino), and has to stay when his cards are higher. In non-casino play,
Doc 5: To become a blackjack dealer, a high school education is typically required, followed by specialized training from a dealer school. Further