About the Animation Timeline
Use the timeline window to view and manipulate the animation events. Once an event is defined, it must be on the timeline in order to be included in the animation. Use the commands on the Animation tab to create or edit events or right-click any of the timeline events and select a command from the shortcut menu.
• The default length and duration of a new animation timeline is 10 seconds.
• To zoom into an area, click 
and draw a box around the area.
and draw a box around the area.• To change the duration of an animation, double-click on the time scale and change the animation time domain.
The following figure shows a timeline with three key frame sequences, a rigid body lock, an event, a connection status change, and a subanimation.
