This third edition of the landmark textbook builds on its reputation as the first systematic and comprehensive account of the grammar of visual design. Features of this fully updated third edition include: new material on diagrams and data visualization; a new approach to the theory of 'modality'; a discussion of how images and their uses have changed　since the first edition; examples from a wide range of digital media including websites, social media, I-phone interfaces and computer games; ideas on the future of visual communication.