The design not only avoids rollers and fasteners but also does not deploy hinged design. Thus, Casso™ Track may be placed behind trim carpentry to mask its appearance. Use it in school classrooms and corridors to display youth art and schoolwork. Several rails may be placed end-to-end to accommodate the entire class. Or place a short length within a classroom for use as the instructor's motivational wall. The "top" two or three results from an assignment earn a placement on the wall. Yet the postings may be changed several times a day. Keep the kids motivated.