You can copy items from the review set to a personal folder for further research. You can then review and mark the items, export them for offline review, search for more items that are related to the copied ones, and more.
To copy an item to a research folder
To select multiple adjacent items, click the first item, and then hold down the Shift key and click the last item. To select nonadjacent items, click the first item, and then hold down the Ctrl key and click additional items. To select all the items, press Ctrl+A.