The document provides an overview of the IRUS usage reports and how to access and use them. It discusses the main reports including the Custom Platform Report, Custom Item Master Report, and Individual Item Report. It also covers the metrics counted in the reports including Total_Item_Requests, Unique_Item_Requests, Total_Item_Investigations, and Unique_Item_Investigations. Support materials like guides, FAQs, and a glossary are available to help users understand how to interpret the reports and answer specific questions.