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The Timeline typically appears just above or below the slide (the Timeline can be dragged to different window positions); each slide has its own unique Timeline. You can use the Timeline to control the timing of any slide object. Using the Timeline, you can force captions to appear on a slide at the same time, and force one caption to appear as another goes away. The Timeline consists of the following features: Object Bars, a Header, a Playhead and Playback Controls. The objects on a project slide are displayed as stacked bars on the left side of the Timeline. The header at the top of the Timeline indicates time in seconds (and parts of seconds). The playhead shows the point in time in which the slide is being viewed.