A family of Microsoft word processing software products for creating web, email, and print documents.
In the Tracking group on the Review tab, click the Markup Options tool, point to Balloons then select either Show Revisions in Balloons or Show Only Comments & Formatting in Balloons.
However, if a document contains a large volume of revisions & comments the program automatically forces use of the Reviewing Pane due to display height limitations in the document window. In that case try using the 2nd of the choices mentioned above in order to reduce the number of balloons.