The thumbnail explorer (see above) displays all the thumbnails available for the selected document. The size of the thumbnails may be adjusted under the Thumbnail Size section of the Viewer group on the toolbar.
This panel may be moved away from the main interface. To do so, select the title bar area and drag the panel to the desired area of the screen (for example, a second monitor).
Thumbnails are loaded asynchronously to provide a more responsive user interface; a loading image will be displayed when a thumbnail is still opening.