Book publishing services generally offer several types of editing to enhance the quality of a manuscript. These include developmental editing, which focuses on the overall structure, content, and narrative flow; line editing, which hones the style, tone, and clarity of the prose; and copyediting, which corrects grammar, punctuation, and spelling errors. Additionally, proofreading is often included as the final step to catch any remaining errors and ensure the manuscript is ready for publication. These editing services are crucial in refining the manuscript and ensuring it is polished, professional, and engaging for readers.