[Zubersoft]

Unfortunately that can't be programmatically handled. If you hit F11, that is the shortcut to making it go fullscreen mode. There isn't a way for me to automatically start the app on a second monitor or even provide an option to move the app to a different monitor in fullscreen mode because Microsoft doesn't expose a way to do this with a store/UWP application. About the only thing I could do is provide a toggle somewhere on the library screen to handle this. One idea is to put a fullscreen/expand icon in the floating toolbar at the bottom right. Would that help?

Thanks,
Mike