Animation Panel Usage

Control widgets in the animation panel:
Slider "Time" the time parameter is double-valued, in this case it is running between 0.0 and 720.0. Whenever this value gets changed, the geometry will be updated.
Button "Rewind" In every animation step the time value gets decremented by the time-sliders block increment.
Button "Start" In every animation step the time value gets incremented by the time-sliders unit increment.
Button "Stop" Stop the animation.
Button "Forward" In every animation step the time value gets incremented by the time-sliders block increment.
Choice "One Way" The animation will automatically stop, as soon as the time reaches the maximum or minimum value of the time-slider.
Choice "Loop" When the time value reaches the maximum value of the time-slider, it is set to the minimum value and vice versa. The animation continues with this new time value.
Choice "Back/Forth" When the time value reaches the maximum or minimum value of the time-slider, the direction of the animation gets inverted.
Button "Hide" The animation panel gets invisible. To get it visible again, press F4 or Ctrl-a.

If the animation is a keyframe animation, the panel gets four additional buttons:
Button "First Key" Set time to time of first keyframe object.
Button "Previous Key" Set time to greatest keyframe time, that is less or equal to current time.
Button "Next Key" Set time to smallest keyframe time, that is greater or equal to current time.
Button "Last Key" Set time to time of last keyframe object.