To add a comment, follow these steps:
1.Place the cursor where you want to add a comment or select the text you want to add a comment.
2.Switch to the comment mode in one of the following ways:
•On the Insert tab, click
Comment.
•On the Review tab, click
Add comment.
•Right-click the text or selected content and click Add comment in the context menu.
3.Enter the desired text in the comment box.
4.If you want to cancel entering a comment, press Esc. If you want to save the comment, do one of the following:
•In the comment box, click Save.

•Click anywhere in the document.
•Press Ctrl+Enter.
Long comments are displayed in the Review pane in abbreviated form. To view the full text of a comment, select it with a left-click.