1. While viewing a document, find View Mode in the App Bar.

2. Select Thumbnails

3. Enable Selection by clicking on the Select button

4. Check boxes will appear on all the pages, and tapping or clicking on a page will now select it.

5. Select one of the options to RotateDelete, or Export the selected pages.

Tip: If using mouse, you can also right click on any page to perform any of the above actions. This will only affect the page that was right clicked though.