41 Publishing services, namely, publishing of books, journals, magazines, publishing of electronic publications; editorial services in the nature of written text editing provided to publishers; production, namely, video tape production, audio recording and production provided to publishers; copyediting in the nature of written text editing; digital outputs, automated transformations, author services, all in the nature of publishing books and electronic publications; peer review, composition, design, creative services, book solution services, all in the nature of written text editing services; publishing e-books in the field of medicine, history, political science, educational textbooks, professional and trade textbooks; digital video, audio, and multimedia publishing services; educational services, namely, providing online digital and e-learning courses in the field of video creation and production, instructional game design and development, and in the field of design and development of interactive learning modules; mobile and digital publication services, conversion of content to digital formats, mobile and digital publication, all in the nature of publishing of electronic publications; online article and issue tracking, namely, writing of articles for periodicals other than for advertising or publicity