When proofing a document, what does a proofreader's mark indicate?

A proofreader's mark primarily indicates a need for editing. These marks are standardized symbols used to communicate specific changes or corrections needed in the text. They serve as visual cues for the writer to make necessary revisions before the document is finalized. Proofreading focuses on identifying issues such as grammatical errors, punctuation mistakes, and typos, which fall under the broader category of editing.

In contrast, while suggestions for reformatting or clarification may be useful, they typically pertain to different stages of the writing process or different types of reviews. Final approval denotes that a document is ready for publication or distribution, which occurs after proofing and editing have been completed. Thus, the mark signifies areas that require attention and refinement to ensure the document's accuracy and clarity before it is considered complete.