The Rave I'Ching Line Companion by Ra Uru Hu: A Guide to 384 Lines is an extensive commentary on the Gates and Lines as listed in the Complete Rave I'ching. In this commentary, Ra describes each Gate and Line in much more depth and detail. All quotes from the Complete Rave I'Ching are color coated for easy reference. Appendex includes 16 pages of relevant information (Hexagram Line structure, outer planet transits, Sun/Earth Line Fixations).