Just now returning to Vienna and am stumped. How can I view articles already marked read. I too often want to "go back" and check something, or wish I had indeed read an article, etc. I can't find a way to do so.
Under the "View" menu, under "filter by", you can pick various other choices for what to see. If this is something you do frequently, you can also "show filter bar" (also on the View menu), which also lets you change this. (And there may be other ways?)