This study deals with the phenomenon of Early Modern encyclopedic annotation apparatuses on Baroque tragedy and inquires into their function. The objects of study are the historical dramas Cleopatra (1661/1680), Agrippina (1665), Epicharis (1665), and Sophonisbe (1680) by Daniel Casper von Lohenstein. This volume is the first to appreciate the "Annotations" as an integral component of von Lohenstein’s dramas.