Accessing external asset library without importing it

I’ve done a lot of searching for this now and since I couldn’t find a definitive answer I’m asking here, but it seems like you cannot reference an external asset in UE4, you MUST import it to use it, is that correct?

I have a huge texture and asset library I want to have access to in UE4 as I figure out just the right texture to use for a given area or just the right kind of tree to place, etc. But I don’t want to have to import every single asset into my game just to be able to test which assets I want to use. It’s easy enough to have source control ignore the asset folder but when I build the game is it automatically going to exclude all content in the asset library that I don’t use?

Just Put the assets u need in the Content Folder. From what i know You can only access stuff that is in the content folder.
And You Can delete the stuff u dont want afterwards.

Cool yeah I understand how to import the content but it’s pretty odd you can’t use external libraries. That means I have to copy the same 30gb library to each of my projects. For now I’m using a symbolic link from the content folder to the asset library but it still populates the asset library with uasset files and I’m not sure if those generated files are per-project or not so I guess I’ll find out…