Under "Add a Document"
Step 1 – Note all the information you can in the title and description.
Step 2 – Upload a blank document.
Step 3 – Tag the file appropriately to assist search engines.
Press “Continue” to complete the upload.
Then when you are routed to “View Document”
Step 1: Press the “X” under files in this document to delete the blank document.
Step 2: Scroll to the bottom of the page and add the external link(s) under “Related Links”
Another interesting note: You can upload multiple files under one document’s name and description. Just select “Add Files” on the middle right of the "view document" page. *The irony of files under a document is duly noted.