I'm a little fuzzy on the developer's intent for the Publisher default preview anyway. Preview normally means taking a peak at but not seeing the whole thing--as in a movie preview. Does the developer intend for this to be a toggle to turn on/off publisher defaults? If so why not just add a selection box on one of the many semi-hidden menus to toggle the feature on/off. Why would we want to merely preview it when a toggle would serve the same purpose and allow us to leave it toggled on/off. Most other reader apps that allow toggling on/off publisher defaults work like I described and don't go through the convoluted and confusing method used in Moon+ Reader. Of course most reader apps have a better designed menu system for toggling settings.