Displace
Displace the current layer using channels from another. Great for making one image appear through another.

Displacement Map The layer to use for displacement.
Source The channel to use for displacement.
Displacement The distance to displace.
Direction The angle of the displacement.
Mode Directional / Bi-Directional.
Input Cycle Cycles the input channel from the displacment layer.
Cycle Mode The method of input cycling. Either Normal (Linear) or Influx ( see Influx ).
Exclude Black from Cycle When checked, cycling the input does not alter black pixels in the displacement map. This allows you to define areas of zero motion, even when the input is cycled.
Edge Behavior Method for handling pixels on and beyond the edges of the layer
Super Sample Off, High, or Extreme. Higher quality, slower rendering.