Basically title. I've seen a lot of hate for this thing, and I appreciate that some people like predictable and tactile keys in that area. But now, having owned a MBP with it, I've found I really like it. The touch controls are intuitive, and doing such things as sliding through videos or sliding the volume/brightness bar, or filling in forms/passwords in Safari, etc are all really nice. Of course it's fun to use for emojis as well. Just saying, I know it's hated by many, but I find it to be a really nice addition to the MBP 