In substantive editing (also known as developmental editing and comprehensive editing), our editor considers a document’s concept and intended use, content, organization, design, and style. Does it all fit together into a coherent whole? Is the order of presentation logical (from the target audience’s point of view)? Is all the necessary information included, and unnecessary information deleted? Are the retrieval aids (table of contents, internal headings, index) useful? Do they contain terms that are useful to the target audience? These are things we’re trained look for!