Ok, so the basics of the idea is that you can use the explorer filter to make the explorer show a view where the top-level node is a specific instance.
So, for example you’d type the path to the instance you want to set as the top level view:
and explorer would look like this:
You’d still be able to expand sub-nodes and see the children of each node.
Now what’s the use-case?
Well, from experience when working on my game I’ve found that I have to continually scroll between open folders to edit sections of the game. Would be great to just be able to show only stuff that’s relevant to me at the time.
It might be a specific case to me, since I have such a large codebase to deal with, but it might be useful in other situations for other people who only want to see a specific list of objects in the explorer.