title: Programmatically add footer to Office Word/Excel document
body: <p>I'm looking to build a solution similar to this one:
  <a href="http://esqinc.com/section/products/4/idocid.html" rel="nofollow noreferrer">http://esqinc.com/section/products/4/idocid.html</a></p>
  
  <p>What the system makes is insertion of a document file name into the document footer. How's that possible programmatically (preferably in .NET)?</p>