You can view and manipulate DWF underlays and change paths to underlays in the External References palette.
You can view file-specific information about the DWF underlays that are attached to a drawing in the External References palette. You can also load and unload underlays and perform other operations.
You can change the file path to a referenced DWF file or search for a DWF underlay when it is reported as not found.
Drawing files that have DWF underlay attachments can be plotted or published as DWF files. DWF underlays are tracked and managed when you eTransmit. Furthermore, DWF underlays are not lost when you save to previous drawing formats.
With the Reference Manager. you can view file references that are attached to a DWG file and edit the paths of the attachments.