INTRODUCTION. Numerous studies have been documenting during the last decades the difficulties of reading comprehension shown by people with autism spectrum disorder (ASD), including those with preserved intelligence. These difficulties can condition their educational path and directly impact on social inclusion, autonomy and access to employment. DEVELOPMENT. This article presents the work developed by a multidisciplinary team under the framework of a project funded by the European Union. It is an explanatory document intended to justify the needs that the population with high-functioning ASD have to access written information. The project is developing a software (Open Book) designed not only 'for' people with ASD, but 'with' people with ASD. CONCLUSION. Both the child population as well as the adult population of persons with ASD show difficulties in all formal components of written language. The tool needs to be flexible and facilitate it's personalized use in order to respond to the great heterogeneity of this population. Abstract available from the publisher.