There are several differences between editors and technical writers. Editors are assigned to work on books, articles, or papers, and improve them by correcting spelling, grammar, and punctuation errors. They may also rewrite some of the text to make the piece read better, be more informative, or clarify some points the article is making. A technical writer produces original content, usually intended to help people understand and use a product or service. While technical writers may edit their writing before turning it in to their employer, they typically are not editing other people's work. An editor may work on the technical document after it has been written, but the technical writer originates it.