组的目的是什么？我们可以用它做什么？

[JammyDodger]

Do they mean this?

Publish group read state

When in a group, knowing if another user reads a message can be quite useful. A couple of months ago we added the experimental “Publish read state” feature, which after a lot of tweaks is now ready to be safely used. As you may have noticed, this shows who read which post. It adds a new icon and the reader’s count just before the likes: [Screen Shot 2020-02-27 at 15.03.02] If you click the icon, you can also see the reader’s avatars (it works the same way that likes). You will only count as a…