A value graph in the Graph Editor displays the values for each keyframe and the interpolated values between keyframes. When the value graph of a layer property is level, the value of the property is unchanged between keyframes. When the value graph goes up or down, the value of a layer property increases or decreases between keyframes.

You can change layer property values by moving the points (keyframes) on the value graph up or down. For example, you can increase a Rotation keyframe’s value by dragging a keyframe marker on the Rotation property’s value graph higher up on the graph.