Content in open education refers to materials for teaching and learning, and research outputs, which are free of charge (preferably openly licensed) and available to all. Content in open education encompasses texts of all sorts, textbooks, course materials, pictures, games, podcasts, video lectures, software, data, research papers and outputs, and any other type of educational material that conveys information which can be used for teaching and learning. It can be open licensed, in the public domain or copyrighted but should be 'gratis' and accessible by everyone without restrictions.
https://joint-research-centre.ec.europa.eu/what-open-education/openedu-framework/content_en
