[2] For example, the Frasier show bible was "scrupulously maintained", and anything established on air — "the name of Frasier's mother, Niles' favorite professor, Martin's favorite bar...even a list of Maris' [dozens of] food allergies" — was reflected in the bible.
[2] The updated bible then serves as a resource for writers to keep everything within the series consistent.
[2] Other bibles are used as sales documents to help a television network or studio understand a series, and are sometimes given to new writers when they join the writing staff for the same reason.
[2] These types of bibles discuss the backstories of the main characters and the history of the series' fictional universe.
[2] In the United States, writing the bible of a produced series earns that writer the 24 units of required credit necessary to qualify for membership in the Writers Guild of America.