I actually half-expected Darkness and Light to be on the shelves when you saw that article...
I'm not sure how the book's original structure survived editing, but the manuscript was broken down as follows:
Introduction
Vorlon History
The Nature of the Vorlons
Vorlon Characters
Vorlon Technology
Worlds of the Vorlon Empire
Vorlon Ice Cream Sales
Servants of the Vorlons
Shadow History
The Nature of the Shadows
Shadow Characters
Shadow Technology
Worlds of the Shadow Dominion
Servants of Darkness
Blame Morden For Everything
Gamesmastering
Adventures
Not all of the above information is entirely accurate.