You may view any comment. You may only edit, close, or delete comments if you have the correct permission. Comments that include redline markups show the redline icon overlaid on the user icon of the comment.
To view a comment:
In the Review ribbon, click Comments.
OR
Right-click the item and then click Comments in the shortcut menu that appears.
OR
On the General page, click the Comments icon.
The list of comments for the selected item appears with the latest comments at the bottom of the list.
To view closed comments: