 Mainly referred to as "The Book", it's a large tome created by the user of the orange light, in this case Larfleeze, sometime after the War of The Green Lanterns, just because Larfleeze's Avarice led him to desire a tome similar to the Book of Oa that was owned by the Guardians of the Universe.The tome should contain the exploits of the Orange Lanterns and Larfleeze even kidnapped a green skinned alien by the name of Stargrave to be his chronicler, however, because he is completely consumed by greed, the book is almost blank because knowledge is something Larfleeze jealously guarded as a possession and was the reason why he did not reveal many secrets within the book despite the scribes directions is.In the universe prior to the current one, groups managed to tap into the wellspring of power created by the Emotional Spectrum.