General information

Node

They form a branch, they are marked in the scene view with a sphere as shown bellow in the image ,
The Number on top is the node index in the selected branch nodes list .

Info

Click on the node in your scene view to directly select a node.

Branch

A branch is formed by nodes. the selected branch is marked with green color in your scene view as shown in the image bellow,

Info

Click on the branch in your scene view to select it.

Shared node

A shared node is a node that is shared by more than one branch, it is represented by a purple sphere in your scene view, like in the image bellow.

Info

The node index on top changes based on the branch you're selecting