The copyeditor is likely the grammar nazi we all fear and specializes in the best-known and arguably most important phase of editing: the copyediting phase. Before a document goes to press or is released, the copyeditor checks for and corrects grammar, spelling errors, syntax, and punctuation. They will also check for consistency throughout the document, making sure usage is standardized throughout. They also fact-check, checking to make sure that names and dates are accurate. In a fiction piece, the copyeditor might ensure that the character descriptions and plot lines are consistent throughout. The copyedit is one of the last steps before production, so it copyeditors work only on completed manuscripts (Einsohn).