1. Definition
2. Explication
2.1 Communicative Instances in Narrative Representations沒看懂
2.2 Authorship and Reception of the Work
2.3 Author as a Social Role
2.3.1. Collaborative as well as Anonymous, Pseudonymous and Fictitious Authorship
3 History of the Concept and its Study
3.1 Antiquity
3.2 Middle Ages