Koren Mahzorim are the clearest and most accurate holiday prayer books available. Outstanding research by liturgical expert and philologist Daniel Goldschmidt enabled Koren to correct errors and to reinstate elements that had been omitted in other Mahzorim. The classic Koren layout emphasizes major public prayers and brings out the power and poetry of the holiday services. The entire series has been completely reset, with detailed instructions and additions similar to the Siddur series. The very popular concise size has been maintained.