16 Printed materials, namely, white papers, hard copies of slide presentations, presentation notes, informational course materials and document summaries, all on the topics of frequently asked questions on the check payment industry, descriptions and explanations of Check Clearing for the 21st Century Act and Regulation CC, ECCHO Rules, activities and decisions of Operations Committee, endorsement considerations for checks, return check hierarchy decision standards, detecting and avoiding duplicate payments, Check 21 Act substitute check handling, Check 21 Expedited Recredit requirements and considerations, minimum Check 21 Compliance Requirements, processing quality standards, grey scale and black and white images for substitute check standards, Tiff Tag discussions, banking practices agreements, and industry perspectives on Check Image Exchange