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This text emphasizes the problem solving process of technical communication and stresses the integrated, recursive nature of producing effective documents, encouraging writers to think of invention and revision as ongoing processes, to think of visuals as ways to present information, to think of language as having the power to shaped and influence reader's perceptions. The traditional concerns of technical communication, techniques such as definitions, descriptions, processes; forms such as correspondence, reports, and proposals , are always related to the rhetorical elements of purpose, audience, and design.