Regarding the first edition: Notably, the encyclopedic section is guided not by territorial state perspectives, but rather focuses on areas of reform activity. This clearly highlights the spectrum of reformist action, while also identifying the limits of reformist politics, with the respective territorial specifics taking a back seat. Günter Vogler, Journal of Historical Science. Walter Demel discusses in a detailed supplement the focal points of research recorded since 1993 and adds to the literature published since then.