We’ve all been there: You see a hashtag trending on Twitter or in something your friend tweeted…except you have no idea what it means or what’s going on. Twitter, it seems, has heard your cries of confusion, and is working on a new feature that should help. According to The Wall Street Journal, Twitter is testing adding explanatory labels to certain popular hashtags in its iOS app. For example, the Journal says, #TBT gets labelled as “Throwback Thursday” with the new label feature, while #OITNB becomes Orange Is the New Black. Not everyone gets this new feature, though—not yet, anyway, Twitter periodically tests new features—such as the Mute tool and various interface changes—on a limited subset of users before it rolls them out to everyone.