I am typing an essay and I forwarded it to my brother who is an English teacher, he sent it back with comments, but there is one thing I can not figure out how he did, I have attached the screenshot in hopes that someone knows how this is done! He calls it offset text, but I am unclear of how this is done!
Look in the Review tab of the Ribbon, pretty hard to miss unless you've customized it beforehand.
Under Tracking options > Change Tracking Options you can set the color, too, so that no confusion ensues of who commented what.