From Detong Technology:
Using Tabs for PowerPoint (original name is PowerPoint Tab) in Microsoft PowerPoint, users can easily open new presentations on the tab bar by several ways. Right click the tab and select "new" in the pop-up menu. Or you can double click Left Mouse Button on the blank area of Tab bar to create new document. The quick way is to double click on the blank area of the tab bar to open new slide. All opened presentations can be closed simultaneously only by one click. To close a presentation is so easy by right-click menu or double-click on the menu. Moreover, you don't need to close presentations before rename this slide, its pop-up menu allows you to rename, save as, open and close presentation slideshow in a convenient way.