Much attention is focused on electronic publishing of books and textbooks. At present most of these eBooks are read on specific reading devices and published in different standards that are not necessarily compatible. Advances in web technologies and the emergence of HTML5 and relevant technologies has greatly improved the possibilities of moving textbook publishing over to the web and use it as the preferred presentation layer. This also means that textbooks can be made much more interactive and it becomes much easier to add advanced multimedia features.The DocBook document standard has been around for a long time and is used by variety of publishers in many types of publishing. On the eve of a new era in publishing it was interesting to investigate how well DocBook 5.0 would support these features made possible by advances in web technology. This project shows that despite a sophisticated technical specification of DocBook 5.0, it offers only limited support for interactive and multimedia features.