Through the commentary of book IV of Wolfram’s Parzival a significant desideratum within Parzival-commentary has been filled. The volume at hand is particularly useful in that it concentrates decisively on text indexing while presenting comprehensive information with philological meticulousness and critically examining its evidence. A special emphasis is placed upon editorial-philological problems of text production, on lexical and grammatical difficulties as well as on Wolframs unique style. The volume is completed by the latest research results on material culture and an extensive examination of frequently discussed problems of interpretation.