A document processor is a computer application that superficially resembles a word processor—but emphasizes the visual layout of the document's components, above creation and formatting of text. Document processor tools are not just typical document elements—paragraphs, lists, headers, etc. The primary attraction of a document processor is the ability to program documents with strong layout controls and powerful conditional automatic formatting rules that create structured documents. This facilitates creating large numbers of similar elements generated and reformatted for different media with little human effort.