This document discusses concepts related to visual communication and semiotics. It introduces key theorists such as Ferdinand de Saussure and Charles Sanders Peirce who studied signs and how meaning is derived. Saussure believed a sign is composed of a signifier and signified. Peirce categorized signs as icons, indexes, and symbols. The document also discusses how meaning can be interpreted through denotation and connotation, and how visual language uses techniques like vectors and participants similarly to linguistic grammar and syntax. Textual determinism and how images can be read in dominant, negotiated, or oppositional ways is also covered.