The Reference Editor toolbar contains shortcuts to frequently used items that exist within the Reference Editor menus.
Create Reference
Imports the contents of a scene into your currently open scene without importing the files into the scene.
See File > Create Reference.
-clicking this button displays the Reference Options menu. This menu is also located at File > Create Reference > in the Reference Editor.
Duplicate Reference
Duplicates the currently selected reference.
Select File Contents
Selects all items in the selected reference file.
Reload Reference File
Updates the selected reference. This is useful when the reference file is being edited simultaneously.
Unload Reference File
Unloads the selected reference.
Add Proxy Reference File
Adds a proxy reference to the currently selected file reference.
-clicking this button brings up the Proxy Options menu. This menu is also located at Proxy > Add Proxy > in the Reference Editor.
Display Only File List
Displays a list of the references in the current scene in the Reference Editor.
Display File List and Outliner Display
Displays a list of the references in the current scene and the Outliner in the Reference Editor.
Display File List, Outliner, and Viewport Display
Displays a list of the references in the current scene, the Outliner, and the Viewport in the Reference Editor.