I don't know that this is a separate section. Right now it feels more like advice to give in various sections of the book on how to masturbate over details and still write something useful at the table. IE: backstory. timeline. NPC trivia, fictpon. etc. Keeping things out of the main text.
Squuens comments on an index are good.
Because of that I'm going to note that this section is currenlty on the chopping block, it instead being ADVICE on mentioned in other areas.