Being able to see to what collections a reference belongs

I would like to see to what collections a reference belongs. This could be implemented by having collection names appear as tags. This would blur the distinction between tags and collection names, which I think would be a welcome improvement. Just like gmail, or any photo manager.

This is an old discussion that has not been active in a long time. Instead of commenting here, you should start a new discussion. If you think the content of this discussion is still relevant, you can link to it from your new discussion.