§ 597 Disposition of ballots - After jury discharged.

Here's a plain English summary of this rule:

When a jury finishes its job and gets sent home, the court doesn't throw away the slips of paper with the jurors' names on them. Instead, those name ballots get folded back up and put back into the box they came from.

This box gets used again and again. Every time a new trial happens and a new jury needs to be picked, the court pulls names from this same box. The process repeats itself for each trial that takes place.

This rule basically explains how courts keep the jury selection process organized and ready to go for future cases. It makes sure there's a system in place so the court always has a way to randomly pick jurors when the next trial comes up.