Nodes

Nodes and node references are fundamental objects that form the world:

•  Node is any object with the .node extension that is present in the world (whether visible or not) and specifically positioned and oriented.
•  Node Reference is a reference to the external .node file that can be used as a reference to other objects.

Base nodes are not present in the world visually and perform the following actions:

•  Dummy Node basically serves as a parent to organize other node into a hierarchy.
•  Layer serves as a parent for other nodes and along with this nodes can be saved into a separate .node file.
•  Pivot creates a new pivot point for its children nodes.
•  Trigger fires callbacks when it is enabled/disabled or its position has been changed.