Authors can use nested launches to avoid repetitive work in various places of their websites. A nested launch is a launch that is created inside of another launch, and can be used to share common settings between multiple launches. For example, if an author needs to use the same set of rules in multiple places of their website, they can create a single launch with those rules, and then nest it inside of other launches that need to use those rules. This is an efficient way of avoiding having to repeat the same work in multiple places.