It would be useful to find the ‘mark all as read’ button at the end of the articles. The current button is too small, and placed on the top right is inconvenient.
This has always been a low priority item that I just haven’t gotten to. I just don’t know how to design it so that I don’t dislike having to see it constantly at the bottoms of story lists.
It would be convenient to have it at the end of the element feed. Not always persistent, only at the end of the last article. Unfortunately I am not a programmer and do not know how to help you. The current position is slightly uncomfortable.