Some editors are in charge of more than one publication. In broadcasting companies, program directors have similar duties to editors. There are a number of different assistants to editors. An editor may have an assistant editor, editorial assistant, copy editor, or production assistant. Many assistants are in entry-level jobs.
Copy editors check for errors in spelling, grammar, and punctuation.
They also check manuscripts for readability and style. They add and rearrange sentences to make the meaning clearer. They may also delete incorrect and unnecessary material. Editorial assistants do research for writers. They verify facts, dates, and statistics.