Among the numerous creations of Sinestro is the Book of Parallax.
Within the pages of the Book of Parallax lies all the knowledge of the Sinestro Corps and everything every Sinestro Corpsman has ever done or will do. A power ring is needed to translate the Book's text into words familiar to the ring wielder.
Before a candidate of the corps enters a fear lodge, their power rings are drained by the Book of Parallax.
The DC Universe heavily changed its continuity into the DCnU following the events of Flashpoint in 2011. This was part of an effort to make storylines more accessible to newer readers, beginning with the New 52. This new timeline combines elements from the DCU, Vertigo Universe and Wildstorm Universe while drastically changing the origins and histories of characters.
The Book was eventually destroyed during the rampage of the First Lantern, but its text continued on as the "Lore of Parallax", inscribed directly into Lyssa Drak's skin and mind, and developing further every time a new member was added.
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