It is a very small upload that requires basically no scripting. All the mod builder need to is import the ERF (it Overwrites nothing) create the treasure stores and edit a single variable in a single script.
It runs using variables stored on the Creatures. These variables have to be preset in the toolset by the mod creator. It allows for Control of random spawns in absolutely any configuration that I could imagine.
Variable chance spawns, unique item spawns, multiple type spawns, you name it.
The system is designed to be as flexible as possible, yet be so small and simple as to be an easy download and easy to use for novice and expert builders alike.