title: Prompt user to save file to a specific location
body: <p>I'm creating a website that generates a text file.  I would like for the user to save the file to a specific folder (it's a backup file for a video game).  </p>
  
  <p>Is it possible to change the default folder the file is saved to via PHP or HTML?  C#, while not my first pick, would also be acceptable.</p>