1. In the Annotations toolbar, click Text , and click the position where you want to place a note.
2. In the dialog box that appears, type the text of the note, and click Create.  The note's placement is reflected by a  icon (filled circle in the annotation color of the user who made the annotation). The user who created the annotation can move its physical location.
   
   Note: When you select the Show Annotation comments on canvas check box in the Smart Review preferences, the text dialog box with your comments will stay open on the canvas.