This section of the Appearance pane in Motion Preferences lets you choose how to display
the bars that appear in the Timeline to represent your objects.
A pop-up menu with three options for Timeline display:
• Name: The bars in the Timeline display the object name only.
• Name Plus Thumbnail: This setting is the default. Bars in the Timeline display an icon
representing the first frame of the object followed by the name of the object.
• Filmstrip: Bars in the Timeline are displayed as a continuous strip of frames. The name
text does not appear. Only layers (shapes, images, image sequences, text, and so on)
display a thumbnail or a continuous strip of frames. Objects such as cameras, lights,
and behaviors do not display a thumbnail.