Apple Shake 4 Tutorials - Manual (Page 42)

42 Chapter 1 Shake Basics
2 Right-click Fade, then choose Create from the shortcut menu (or, you can click Fade
while holding down the Control and Shift keys).
This inserts a new Fade1 node that is not connected to any existing nodes.
3 Drag Fade1 over the connection between the Move2D1 and the Screen1 nodes. When
the inputs turn yellow, release the mouse button and Fade1 is inserted between the
two nodes.
4 In the Fade1 parameters, drag the value slider to 0.25.
This reduces the opacity of the lighting pass to 25 percent.