Overview
Markers allow you to define a point in your timeline that designates a major section of your presentation.
Here is what a Marker looks like in the timeline (this one is at 1.75 seconds into the timeline):
Navigation Aids
Markers are navigation aids for both you and your viewers.
You can easily move through the markers in your presentation by using shift-Up Arrow, and shift-Down Arrow.
If you have Markers in your Timeline, then when you Export to a QuickTime movie, you have the option of adding a Chapter Track to the exported movie. Your users will then have the ability to select chapters in your presentation, allowing them to quickly navigate through your movie.
Adding a Marker
Move your scrubber to the point where you’d like to add the Marker, and then select “Add…” from the “Markers” menu in the “Edit” menu or press the backwards-single quote key. Enter the text for the marker, and press “OK”.
Markers without Text
If you do not enter any text into the box and just press “OK” the marker will be present in the timeline, but it is not added to the Chapter Track during export. This is useful if you want to insert markers for quick navigation around your document during the editing process.
Deleting Markers
To delete a single Marker, move the scrubber until it is over the Marker (it should snap) or use shift-up-arrow and shift-down-arrow to navigate to a particular Marker). Then select “Delete” from the “Markers” menu in the “Edit” menu or press shift-~.
To delete all Chapter Markers, select “Delete All” from the “Markers” menu in the “Edit” menu.