Timeline panel
View > Panel > Timeline
Alt+4
Lets you create animations with layers.
Timeline menu
The drop-down menu in the top left corner of the Timeline panel shows the name of the current Time Line.
To add a new timeline, right-click anywhere inside the Timeline panel and select Add Timeline in the shortcut menu. To delete the current timeline, select Delete Timeline in the shortcut menu.
To rename the current timeline, click the existing name and type in a new name.
Frame advance buttons
Click this button to go back to the first frame.
Click this button to go back one frame, moving the current frame indicator one frame left.
Click this button to advance one frame, moving the current frame indicator one frame right.
fps
This text box can be used to specify the speed of the animation in frames per second. The bigger this number, the faster the layer movement becomes.
Auto start
If this option is selected, the animation will start as soon as the document containing it is loaded in the browser window. You can check whether this option has been applied to the timeline or not in Preview mode.
Repeat
If this option is selected, the animation will repeat continuously. You can check whether this option has been applied in Preview mode.