Abstract
Technical communication textbooks tend to address visual rhetoric as two separate units, usually a chapter on document design and then a chapter on graphics. We advocate teaching a unified system of visual rhetoric that encompasses both text and graphics within a common visual-language system. Using C. S. Peirce's three-part theory of rhetoric and his ten categories of sign, we offer an integrated semiotic system, interpreting in one model the effectiveness of graphics, document design, and formatting, all considered as subtypes in this proposed visual rhetoric, organized around three primary communication goals: to decorate, to indicate, and to inform. Thus, any evaluation of visuals, either textual or graphic, must be made with reference to rhetorical contexts in which audience needs and graphic/textual media choices should align with authorial goals