The Lesser Key of Solomon
These acts present themselves as diabolical pacts, however critics claim there is never certainty of an actor's authentic sanity in all cases. Whether they were authentic, written by or just were fake acts presented by the tribunals. Usually the acts included strange characters that were said to be the signature of a demon, and each one had his own signature or seal. Books like "The Lesser Key of Solomon" (also known as "Lemegeton Clavicula Salomonis") give a detailed list of these signs, known as diabolical signatures.