Adding Links to Elements
After you have created links in a link set, you can attach one or more of these links to an element in the open DGN file. This allows you to click the element and open the files that are linked to it. For example, you could add a link to a Microsoft Excel workbook that contains specifications and costs for beams. Then you could link this Excel workbook to the element representing the beam in the DGN file so that anyone viewing the DGN file would have access to the specifications.
In DGN workmode you are able to add multiple links to a single element. Once links are added to an element, when you position your pointer on the element you see a link icon, a list of links, the links' paths relative to the DGN file containing the links, and the linked files' names.
You also can see information about an element's links on the Links tab in the Project Explorer dialog.
If you no longer want the linked file to be attached to the element, you can delete the link.