Comparing ECAD Designs > Viewing and Reviewing Comparison Results > To Tag Differences with Review States and Comments
  
To Tag Differences with Review States and Comments
1. In the Difference Details tab of the lower data panel, select one or more results, right-click, and then select Reviewer Input. The Reviewer Input dialog box opens.
2. To apply a new review state, select the Set New State check box.
3. For a new or updated state, select a state from the list.
4. Under Add New Comments, type a comment.
5. Click OK. The state is updated.
6. To show or hide the review details in the Difference Details tab, right-click any row and select Show Review History. The tab updates.
* 
You can also use the ribbon. Click Compare Results > Review History to toggle the display.