Timeline Toolbar Show Storyboard/Show Timeline Switch between the Timeline view and the Storyboard View. See Change the Timeline View. Tracks Select which tracks to display on the Timeline. Zoom In Zoom in on the Timeline. Zoom Out Zoom out on the Timeline. Fully zoomed out shows the entire Timeline. Cut Selection Delete a selection from the Timeline. Split Split a clip at the position of the playhead. Fade In Fade in the volume on the audio tracks. Fade Out Fade out the volume on the audio tracks. Volume Up Volume Down Replace with Silence Mutes the audio selection on the Timeline Audio Enhancements Open the Audio Enhancements pane to improve the quality of audio on the Timeline. Apply SmartFocus Camtasia SmartFocus™ automatically generates Zoom-n-Pan keyframes to optimize viewing at any dimensions.