Here are five of them.

Leon Neal via Getty Images Queen Elizabeth II and Prince Philip in March 2017.

1. The first people to know will speak in code.

The queen’s private secretary, Sir Christopher Geidt, will be the first to be informed of her death, followed by the prime minister, according to The Guardian. When it happens, “civil servants will say ‘London Bridge is down’ on secure lines.”

2. Reporters will be sartorially prepared.

Previous reports suggested the news might be held until 8 a.m. if the queen dies overnight, but the Guardian now says it will be reported immediately. Either way, it will be delivered by reporters who are appropriately dressed in somber clothes.