Board Thread:Support Requests - Getting Technical/@comment-1979718-20130413115227

From threads like this one, I always thought shared file repositories could not be done. But recently I found this: w:c:es.fallout:File:Fnv_collector_edition-generic.jpg. A note below says: "This file is from a shared repository and can be used for others projects". It looks like any image uploaded to the english version is copied to the local repository of the other versions instantaneously.

How is this done? 