The PDF exclusive might include additional materials like theurgic invocations or the use of the 36 demons with their names, seals, and incantations. There might be a section on theurgic invocations rather than the goetic evocations. Also, the use of various magical operations like the evocation rite, the binding of spirits, the use of the four elements in magical ceremonies.

I need to structure the paper into sections: Introduction, Historical Context, Structure and Contents of the Four Books, Key Components and Magical Elements, Cultural Impact and Legacy, Conclusion.

Next, the paper should cover the historical background of the Lemegeton. It's a Renaissance-era text, compiled in the 17th century by Johann Weyer. But there's some speculation about its origins. Some say it's based on earlier Hermetic texts, others on Arabic and Jewish mystical traditions. The Lemegeton was used by occultists like John Dee and is part of the Goetia tradition. The Goetia itself is part of the Lemegeton's Goetia (Book I).