This plugin adds an options dialog in which the user of the book may choose whether he wishes to see the book reflection and / or the page shadows and highlights. Basically, this allows user to change the settings which don't change actual behavior, but have the most impact on performance.
This plugin strongly depends on the NavigationBar plugin to be loaded, to add the button opening the options window to it. The plugin has no other effect, i.e. it doesn't define any settings or attributes.