Following the same discontinuity idea, Theodor Nelson, influenced both by Bush’s Memex and Engelbart’s ideas presented the concept of Hypertext, in 1965, which was considered a landmark in the history of multimodality. Nelson developed Xanadu Project [10] hypertext system lying between environmental design and software, being able to view a text and its links on computer screen. Xanadu Project has received various updates and different versions and Nelson had to continuously readapt to new teams working on the project in the forty years from the date the project was first launched to the present days. In Nelson’s hypertext vision, a serious electronic literature, created to teaching and sharing must support two directional and profuse links and must offer means for a proper reuse; however, this reality has not been accomplished yet.