§ 848 Evidence on inquiry - Witnesses.

Here's a plain English summary:

When a judge is looking into a matter under this part of the law, they can order witnesses to show up and testify. This works just like it would if the case were going to a full trial with a jury.

In simple terms, this means the court has the power to make people come to court and answer questions, even if this isn't a typical trial. The witnesses have to testify the same way they would if they were part of a regular court trial. This gives the judge the tools needed to gather facts and get truthful answers from people who have relevant information.