You probaby know you can tag a user like @COEST but now, when you type the "@" sign, you can also start typing in content like titles to other articles to link directly to them. If you start typing and scroll down the suggestions box, besides users, there is now a section for content. If you click on one of those it will insert the content link into your post like this when I do an @ sign at start typing "Fiscal" (@fiscal) it gives me some options. I choose one and it inserts the link into the post like this: Fiscal Benefits of increased data utilization
It's a way to easily tag people and link to other community content. Give it a try.