Mirror
Mirrors the image, flipping it in the horizontal and/or vertical directions. Unlike the ImageTransform node, this performs no filtering, so pixel values are not changed.
user
Container for user-defined plugs. Nodes should never make their own plugs here, so users are free to do as they wish.
out
The output image generated by this node.
enabled
Turns the node on and off.
in
The input image
horizontal
Mirrors horizontally, flopping the image left to right.
vertical
Mirrors vertically, flipping the image top to bottom.