Docs: Suggest Edits in Google Docs

In Suggesting mode, any changes that you make will not directly affect the official document. Instead, your change will show up as a suggestion to the Owner and Editors of the document, which they can then choose to accept or deny. Let's suppose you want to:

• Add something
  Anything that you add will appear with a new color.
  
  
• Delete something
  Anything that you delete will appear with a strike-through or with an "x"
  
  
  
• Make a comment about your change
  If you have additional comments about an addition or deletion, make 
  
  
  
• Remove your suggestion.
  Changed your mind? You can delete your suggestion by clicking on the "x" next to your comment and name.