The scene tree pane shows the hierarchy of the meshes in your loaded scene. You can select single or multiple meshes for adjusting, include or exclude meshes for exporting, and observe the node types in the scene tree window.
Components of Node
Node Types
Renaming Nodes
Scene Tree and Node Attribute
Selecting Mesh Nodes
Including and Excluding Mesh Nodes
Excluding Back Side
Scene Tree Display - Hiding the Excluded Nodes