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Introduction 1. Worlds within the World 2. A History of Imaginary Worlds 3. World Structures and Systems of Relationships 4. More Than a Story: Narrative Threads and Narrative Fabric 5. Subcreation within Subcreated Worlds 6. Transmedial Growth and Adaptation 7. Circles of Authorship Glossary Appendix: Timeline of Imaginary Worlds
Mark J. P. Wolf (Thu,) studied this question.