> Timeline Pane
> Use the Timeline pane to set timeline preferences.
> Figure 79. Preferences Timeline Pane
> These controls are described in Table 25.

> Table 25. Preferences Timeline Pane Options
> Control | Description
> Use SMPTE timecode | Check to display the scale as SMPTE timecode (HH:MM:SS:FF—Hours:Minutes:Seconds:Frames). If unchecked, the scale displays the scale informally. For example: 1h2m30s.
> Hide Action Menu Overlay in Clips | Check to hide the action gear menu in clips.
> Show Stereo Audio Waveforms | Check to display two audio waveforms (left and right) in the editor window toolbar, instead of a single, combined waveform.
> Default Transitions | Select the default effect to use when generating a transition. Default: Bars Swipe.
> Default Track Height | Select the default track height of timeline tracks: small, Regular, or Large. If your project has many tracks, you can set this to Small to view more tracks in your window without scrolling. Default: Regular.
> Default Durations | Select the duration field of the item you want to change. These are default time values for actions, transitions, still images, callouts, and annotations. Enter the value (in seconds) of the default length of the item when added to the timeline. Range: one-tenth of a second (typically 3 frames) up to (but not including) 30 seconds.