如何获取“返回”按钮

[Lilly]

What does the timeline back button do?

The blue back button in the vertical timeline (or on mobile, it pops up above the timeline docked at the bottom) takes you to your lowest read position in the topic. [image] (I am testing in https://bbs.boingboing.net/t/post-your-pet-or-animal-pics/72032 which I do have read position on, it is post #1983) However if your lowest read position is at the absolute bottom of the topic, the button will not appear because you can already reach the bottom by pressing the end key or clicking/tapping t…