Concept of levels

A level node is a container of subgraph, it is similar to a folder in a file system.

You can organise a subset of nodes into a level node and use “levelOutput” node to export data outside.

Navigating levels inside NodeSpell

Double click level node or press “Enter” to go inside the level node, and jump out by pressing “u”(up) key or click the up button on the Node Graph panel.

If you are inside many levels of level nodes, using the path bar on top of the Node Graph is also a good way to navigate the node tree.

Creating a UDN (User Defined Node)

One of the special qualities of the level node is that you can turn it into a UDN, you can think of this as a prepackaged subgraph. A UDN by default is unpacked, in this way it behaves like all built in nodes and generally you can consider it as one node.

However, you can unpack a UDN node, which will unpack the content of the node itself, effectively turning it into a level node.