The Range Slider controls the playback range reflected in the Time Slider.
Animation Start Time
This field sets the start time of the animation.
Animation End Time
This field sets the end time of the animation.
Playback Start Time
This field shows the current start time for the playback range. You can change it by entering a new start time, including a negative value. If you enter a value that is greater than the Playback End Time, the Playback End Time is adjusted to one time unit greater than the Playback Start Time.
Playback End Time
This field shows the current end time for the playback range. You can change it by entering a new end time. If you enter a value less than the Playback Start Time’s value, the Playback Start Time is shifted to one time unit less than the Playback End Time.
You can also edit the preceding settings from the Animation Preferences window.