To preview the articulate
        storyline file:
- Navigate to
            the Home menu
            and select Entire
                    Project option
            available on the Preview dropdown available in the
            Publish menu. 

This will allow you to preview the
    entire project which is recommended to do
    before publishing a SCORM package or publishing to word. 
To preview just a portion of the storyline
    file, the following options are available on
    the Preview dropdown:
- This Slide
- This Scene
- Selected Scenes
Click on Close
            Preview button to close
    the preview window and navigate back to where
    you were prior to previewing.

See Storyline 360: Previewing
        a Course for more details.
