"This book delfs deep into what the Middle Sea Empire is, its
structures, its plans, its culture and how The Abiding Book
ties all these disparate strands together. It is an examination
of empire.

It is also, of course, a resource for Gloranthan adventures
using the RuneQuest Core Rules. Within these pages you will
find a detailed explanation of God Learner culture and learn
just what it is to play a God Learner Adventurer. It is best
compared with Races of Glorantha but with a sharply defined
focus."

Text from the introduction page of the book/pdf