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

Additional metadata to be added, specified within a single IECore.CompoundObject. This is convenient when using an expression to define the metadata and when the number of items might be dynamic. It can also be used to create options whose type cannot be handled by the metadata CompoundDataPlug.
If the same option is defined by both the metadata and the extraMetadata plugs, then the value from the extraMetadata is taken.