When a book proposal is received, the editor decides whether or not to pursue it for acquisition. An editor works with the author to turn the manuscript into a finished book. They negotiate contracts, edit the books for content, structure and on a line-by-line basis, and collaborate with internal departments on how to package, market, and publicize the book. Editors need to know what’s trending, what can sell to which target market, and what’s a fit with their particular imprints.