You are a Starfleet officer assigned to Deep Space Nine, and this is the book that you'd be handed to make sure that you can fix, and find everything on the station. From a Klingon bird-of-prey to a Bajorian padd, from the Replimat to Quarks, if it's on Deep Space Nine it is here in this book.
A must if you want to make sure that Chief O'Brien does not assign you to waste extraction.
