An interactive book should be intuitively understandable when it comes to idea, structure and purpose. In the meaning that an iReader that opens an interactive book for the first time should learn in a brief introduction to be able to orientate herself in the book. However, this goal is not always that easy to achieve. Because of the complexity that interactive features provide in an overall dynamic integrated storytelling environment. But to again state what was said above, when writing an interactive book, the iReader should be even more to be taken into consideration than when writing for publishing a traditional book. In other words, it is more focus on user experience design (UX design). Since it is much more opportunities to improve the story or other forms of content with interactive features.