Comments offer an effective way to include margin notes, questions, opinions, and suggested changes or corrections. And they’re very easy to add in Pages ’08.
To add a comment:
Pages opens the Comments pane and creates a new yellow comment bubble. To help you (and your collaborators) know who inserted the comment and when, Pages adds your name and includes date and time stamps. Pages also draws a line from the comment bubble to the text to which it refers, making it easier for reviewers to find associated copy.