You have the option of using cineSync 5 without any visible interface (i.e., no borders around the image or transport/control bar at the bottom), and the application will be displayed using the entire screen on your monitor.
You can enter Full-Screen mode from the ‘View’ menu by clicking the ‘Fullscreen’ option.
Or by selecting the 'Toggle fullscreen mode' icon at the bottom right.
Image: Example of the image in the fullscreen mode.
To take cineSync out of the full screen, click the ESC key.
Tip: In the full-screen mode, you can still use the bottom transport bar, for that, you simply need to hover over the lower section, and it re-appears (but disappears again if not used).