If there's one thing people on the Internet love, it's correcting each other. Correcting other people makes you feel smart while simultaneously making other people look stupid. And don't think you can only correct people's grammar; if you try hard enough you can correct just about anything, including fonts, opinions, and objectively true facts.
For years proofreaders have used their own special notation to correct people with one deft mark, but, like much of the publishing industry, these marks have struggled to conform to the new norms of the digital age. Until now! These new editorial marks let you correct people faster and more efficiently than ever before.