You can create a link (link type of Folder Link) to a folder containing DGN, DWG, and DXF files. Folders can be dragged from Windows Explorer directly in the Links tab of the Explorer dialog or created via the PROJECT CREATE LINK FOLDER [folder_path] key-in. Multiple folder paths can be specified via this key-in.

If you create a link to a folder, in the Links tab of the Explorer dialog you will see the name of the folder in black, indicating you can copy or delete the folder and all the files and sub-folders within the folder. The files and sub-folders under the folder cannot be moved or deleted independently.

You can open the linked folder in Windows Explorer by right-clicking the folder link and selecting Open from the pop-up menu.