	Useful in many word processors, a track changes feature allows users to make changes to a document and view them separately from the original document. In Microsoft Word, users can choose whether to show or hide changes by clicking track changes under the Review ribbon. Those editing documents can leave comments by clicking wherever the user desires to leave a comment and clicking New Comment under the review ribbon or by highlighting text and clicking New Comment. Users can select the revision of specific users whom they have allowed to revise their work and choose which level of mark ups to view under the Show Markup dropdown menu in the Review ribbon. Users can also choose to accept or reject changes by clicking either Accept or Reject in the Review Ribbon.