: This creates a reference to the original file. Any changes made to the source file will update in your current scene, but you cannot edit the object directly.
: If the object imports far away, use the 3D Printer Academy tip of setting the origin to the center of the scene. importing-objects-into-blender
: This creates a fresh copy in your current file. You can edit it freely without affecting the original. : This creates a reference to the original file