AppBlock uses the file Content://Cz.Mobilesoft.Appblock.Fileprovider/Cache/Blank.Html to keep things simple when it blocks apps or web content. Rather than displaying errors or a complex page, the app returns this blank file. This gives the user interface a better feel and prevents confusion. The menus.html and blank.htm files should also ensure that blocked pages do not load unnecessary data. It is a featherweight manner in which AppBlock can perform well. The file does nothing more than state that a file should not execute to this point.