In order to see Hard Returns, unnecessary tabs, and other unintentional or unwanted elements of your Word manuscript, you'll need to show invisible characters in word. You can follow the instructions in the below videos.
How to Show Invisible Characters in Word on a Mac
https://www.youtube.com/watch?v=oN2HsoWq4eY
How to Show Invisible Characters in Word on Windows
https://www.youtube.com/watch?v=03MiwlhhbM0
You can also see where "section" or "page" breaks exist using this feature:
