Flatbook, which allows you to read onscreen text documents like a book, is a text viewer program. Whenever it is necessary to read a text document on the monitor for a long time, Flatbook makes the reading as comfortable as reading a real book and minimizes fatigue of the eyes. Flatbook uses page units applied to the screen (not to print), which enables the user to read a text document as conveniently as turning the pages of a book. Flatbook uses themes that allow you to easily convert a text document to a flat book--its pages having the preferred size, font, color, margins, and so on.