I can proofread short documents up to 100 words. Proofreading, on the other hand, is about finding errors both small and large that were either missed or introduced during editing. Proofreaders ensure that the document's final draft is completely free of grammatical errors (e.g., subject–verb agreement problems, incorrect word choices, improper punctuation usage, and incorrect spelling) as well as formatting and typographical errors. They also make sure the document adheres to the chosen style guide. Unlike traditional proofreaders in the publishing industry, document proofreaders are not limited in the number of revisions they can make to a document, as there is generally no elevated proofreading cost associated with making more changes. However, if proofreaders find that most of the document still requires extensive changes, they may recommend that it undergo another round of editing.