The document discusses the transition from traditional textbooks to next-generation digital textbooks, or "eternity". It proposes moving from formal, teacher-led education using traditional textbooks to more informal, responsive digital textbooks. These digital textbooks would be adaptable, personalized, flexible and accessible. They would include learning activities, multimedia, and tools for adaptation, recombination, assessment and collaboration. The document also discusses the role that standards organizations like CEN Workshop on Learning Technologies could play in bringing together stakeholders to develop standards and frameworks for digital textbooks in Europe. The goal is to understand requirements, ensure educational services can be integrated with publishing standards, and facilitate international collaboration and consensus.