The Viewer window opens when you double-click a row in your song list, or use the "Open" button in the preview panel.
Once inside the Viewer screen, you may change pages by swiping, tapping the edges of the page, clicking the arrow buttons on the side of the page, using your keyboard's arrow or page up/page down keys, or by connecting with a hands-free bluetooth device.
You may also jump to specific pages by using the page number buttons at the bottom of the preview window.
You can change the zoom level to "fit to height" or "fit to width" using the toggle buttons on the top left of the preview window.
Please note: The playback system will keep the playing music in view by scrolling the current page and advancing to the next page at the appropriate time. You will be able to manually turn pages and scroll only before pressing play or after the music is stopped.