Before you take rubbings from the headstones found within, kindly understand clearly what is not here. The deceased here are not practice tests. They are the ghouls whose days spent tormenting the ill-prepared are no more. Although you may learn by disinterring them and studying their moldering remains, they are not the demons that will bedevil you. Their anatomies were determined by texts now trashed and syllabi well traversed. The structure of your incubi will be induced by their very own game rules, your current Game Rules. Grok this in fullness and study well the rites. Write rightly.