The Edict determines the boundaries of new baronies according to a series of arcane formulae. It takes into account the nation of the new baron's residence, but also places a strong emphasis on historical associations. Somehow, it all works out.
Known Text Edit
"We hereby empower You, as leader of the knights of Your Demesne, to protect and defend this Sacred Land from all threats, both those that strike from afar, and those that creep from within."
The Real World Edit
In the Real World, the Edict of Bast consists of Huinesoron reacting to people's wishes as best he can.