Check grammar, spelling, and punctuation while keeping your draft close at hand. Fix Errors Only makes focused corrections; Improve Clarity also addresses awkward wording.
Start with Fix Errors Only when your phrasing already sounds right. Choose Improve Clarity when a sentence is correct but difficult to follow. For a more substantial rewrite, use Rewrite instead.
Read the corrected text beside your source and use the result actions to compare or copy it. Names, deliberate stylistic choices, and specialized terminology deserve a final check.