save multiple open files at once or open multiple recent items
Acrobat DC std/pro do not have an option to save multiple open files at once. If i have 10 pdfs open in 10 different tabs there is no way to save all of those files at once to a single location. You have to save one by one.
Similarly you cannot open multiple recent items. Yes you can select multiple recent items using the checkbox but the only available option thereafter is to combine or remove from list. No option to OPEN.