From the introduction: This document is intended as a regional supplement to the Living Greyhawk Rules Update 3: Adventure Certificates. Contained within are regional modifications and clarifications that apply to open item purchases in the Verbobonc region of the Living Greyhawk Campaign (which corresponds to the real-world US state of Illinois and Indiana). You should have a copy of RUP3: Adventure Certificates on hand to reference when reading this document. User summary: This document was used as formal rulings and precedents during the Viscounty of Verbobonc organized play (part of Living Greyhawk). However, it was not published by Wizards of the Coast.