The document provides step-by-step instructions for customizing the check printing report in Oracle R12. It discusses developing customized templates, modifying code to include additional data, and setting up payment profiles and formats to display data using the customized templates. Key steps include: 1) Developing customized templates; 2) Adding code to retrieve additional data; 3) Creating template definitions, payment formats, documents, and profiles linked to the customized templates. This allows payments to be generated using the customized templates and layouts while retaining the option to use the standard templates.