You can use comments in your document to highlight key information or to annotate your document with additional notes.
Adding a New Comment
To add a new comment to a document, select where you need to add the comment and click on the Review tab and then the New Comment command.
Type your comment. Word shows your comment in a balloon in the document's right margin.
Delete a comment
You can use the Next and Previous commands to move between comments that have been added to your document.
To delete a comment, click on the Delete command.