So you got the changes back from the author and editor, now what do you do with the marked-up PDF? In this lightning-speed tip session you’ll see how to use the built-in tools of Adobe’s free Acrobat Reader DC to find each and every change that was marked, and use a simple trick for quality assurance.
For more tips and tricks, sign up for the full Editing on PDF course. Start any time and go at your own pace.
So you’ve got a marked-up PDF back from your editor, now what? @sciEditor explains: https://t.co/vFeRVQ2srP pic.twitter.com/MtlOnajO4a
— Adobe Acrobat (@Acrobat) December 3, 2015

Have a Word file instead? Find instructions for reviewing changes in Word files here.
The MagPi magazine used in this demo is used under a CC BY-NC-SA 3.0 license. All markup is fictitious and does not constitute a comment on the content.