§ 784 Notice of application.

Here's a plain English summary of this rule:

If someone wants to ask the court for something under this rule, they can bring their request directly to the judge. But they can't just show up and ask. They have to give the district attorney at least five days' notice before making the request.

This gives the district attorney time to prepare a response. It also makes sure the prosecution isn't caught off guard by a surprise request in court. The five-day waiting period is meant to keep the process fair for both sides.