To open a data tree pane, click the 
New Tab icon at the top of a pane and select New Pane Tab Type ▸ Inspectors ▸ Data Tree.
Plug-ins ¶
The currently available plug-ins in the data tree pane are:
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The light bank lets you quickly see and edit the values on all the lights in the scene, including linking lights to objects.
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The object appearance editor lets you see and edit the display properties of all the geometry in the scene. For example, you can set a subobject in an Alembic file hierarchy to display as a point cloud.
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The material style sheet editor lets you create and edit material style sheets for controlling the appearance of objects at render time.
