You can close a presentation at any time. Note that although this closes the presentation window, it does not exit PowerPoint as do the methods discussed in Lesson 1. To close a presentation, follow these steps:
If more than one presentation is open , click a presentation's button on the Windows taskbar to make it the active presentation, or you can select the Window menu and select the presentation from the list provided.
Select File, Close, or click the presentation's Close ( X ) button. (It's the lower of the two Close buttons ; the upper one is for the PowerPoint window.) If you haven't saved the presentation or if you haven't saved since you last made changes, a dialog box appears, asking whether you want to save.
To save your changes, click Yes . If this is a new presentation that has never been saved, refer to the steps in the preceding section for saving a presentation. If you have saved the file previously, the presentation window closes.