When Is Navigation Root Behavior Useful?

After creating a Dexterity type through the web, I try enabling the Navigation root behavior. I find this behavior forcing the items displaying as they are in the navigation-root context.

What example use cases will we find this behavior good for?

Environment: Plone 4.3.1

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Solution

It's useful for when you have any folder that should be the "root" of navigation, such as language folders, or if you have your site split up into independent sub-sections or microsites.