When I add a product, it automatically creates a folder for it at the left side. I can add different things but no subfolder. That would be very useful, as e.g. documentation of a product (many wiki pages) belong to that product.
Hi, Andreas!
Well, in fact you can create a ‘subfolder’ for a child type as well. Turn it on here
As for the documentation - mostly doc, that belongs to a definite entity lives inside this entity as a Rich Text field (you can add as much, as you want 
)
And Documents, that are Views - maybe you can create a folder, inside a Product Folder (context view) and store it there?
Maybe I did not express correctly. Please have a look here - this is a listed product:
But as you can see, I can not add a subfolder.
Sorry, got you know.
Yes, that folders are still not there. We have a lot of things to improve about Context Views, and folders is one of it. But will think about it, maybe there is a ‘cheap’ way to develop smth like this 