If the PDF for review contains SWFs that you can play and pause, you can add comments to individual slides. However, when RoboHelp imports the comments, it removes the slide association and places all the comments added to a SWF file above the SWF file in Design Editor. It also displays each comment as a separate entry in Review Pane.
tip: To indicate the context of a comment, add the slide title or text to describe the slide (for example, Command menu slide: Move the pointer away from the selected menu item).
1)Choose Comments > Show Comment & Markup Toolbar.
2)Click Pause where you want to add a comment.
3)Select the Sticky Note commenting tool and click the slide to add the comment.
4)Click Play to continue the review.