The graphs display animation data using the horizontal axis for the
frames and vertical axis for the property values.
Use the same zoom controls to adjust the viewing of your curves. With
the Home key, you can fit all curves and keyframes in the current editor.
If your keyboard doesn't have a Home key, use the View → Frame All
menu.
The keyframes appear as small dots at the start and end of each curve
(Figure 7.17).
Figure 7.17 - Keyframes in the Graph Editor
If you select a keyframe and use the G key to move it around, you will
see the curve structure adjusting to the new keyframe location. Besides
changing keyframes, you will also see the control handlers (Figure 7.18).