I’m not sure how it happened, but a bunch of my documents in the binder are highlighted in blue. When I select them, it shows a blue circle icon on the right side of the document name. What does this mean and how do I turn it off?
You’ve turned on the View->Use Label Color In->Binder option. You might find the “Icons” less obtrusive while still telling you what label has been applied, if that information is useful to you. I like turning on the Icons and Index Cards options.