Otl Aicher, who together with his team designed a groundbreaking pictogram system for the 1972 Olympic Games—one that remains influential to this day—defined six criteria for the design of pictorial signs, relating to the content-related and design qualities of graphic symbols. Fundamentally, these requirements provide a general framework for designing and evaluating pictorial signs with regard to graphic quality and communicative efficiency. The individual criteria are not to be viewed in isolation; rather, they complement one another.