filename.png # Same filename from de.wp to commons (same name) "filename.png" "|cat1|cat2" # Same filename from de.wp to commons, add commons catgories cat1, cat2 "de-wp.png" "commons.png" # Different filename on commons "f1.png" "f2.png|cat1|cat2" # Different filename on commons, add commons catgories cat1, cat2