Parent

Parents one scene hierarchy into another.

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 processed output scene.

enabled

The on/off state of the node. When it is off, the node outputs the input scene unchanged.

in

The input scene

parent

The location which the child is parented under.

child

The child hierarchy to be parented.