Finally, there is the Fullscreen Preview. To open an asset in Fullscreen Preview:
1. Select the respective record in your collection.
2. From the Asset menu, select Fullscreen Preview, or press Ctrl+Shift+Y / Cmd+SHIFT+Y
A preview of the asset is opened in fullscreen mode.
Move the pointer to the bottom of the Fullscreen Preview, and a toolbar appears offering buttons for navigating, for getting help and for closing the window.
If you leave the mouse pointer for a second on the Help button (), a list of commands available in Fullscreen Preview is displayed. Clicking this button opens the Cumulus help.
But the Fullscreen Preview can do even more. If you move the pointer to the left hand side of the screen, an information pane is displayed. By default, this pane disappears again when you move the pointer away. However, you can make it sticky, if desired, by clicking the pin symbol in the upper left corner.
To quit the Fullscreen Preview, just pres the ESC key on your keyboard.
By the way, with the Fullscreen Preview, you are not restricted to preview just one asset at a time. In fact, you can preview ut up to six assets simultaneously by first selecting their records, then selecting Fullscreen Preview from the Asset menu. This makes the quick comparison of various assets a mere child’s play.
Ctrl+Shift+Y / 
Cmd+SHIFT+Y
), a list of commands available in Fullscreen Preview is displayed. Clicking this button opens the Cumulus help.