Note Clicking Markup on the View menu will display or hide all markup in the document. When you display all markup, all types of markup will be selected on the Show menu.
Reject all changes or delete all comments at once
Review items created by a specific reviewer
To select or clear the check boxes for all reviewers in the list, click All Reviewers.
Review each change and comment shown in sequence
Accept all changes for the selected reviewer
Reject all changes or delete all comments from the selected reviewer