In Sharepoint Online, when looking at the details pane for the "Pages" view, there is what appears to be a link to click for "More details":
And looking at the HTML source, it appears to be a button. But it doesn't seem to do anything: I've tried it in multiple browsers. How do I get to see the "more details"?
Turns out that this is just a non-functional UI element. My root problem was that I had accidentally created a private view, and I was trying to find the ACL for the view. Which I never did: ended up deleting this view and creating an identical public one.