Re: Let the header name be "Location:"

To follow up on what Ned Freed said ...
  
  Unless you intend for this mechanism to only work for messages as a whole, it
  has to begin with "Content-".
  
Sorry, I don't get it.  

If you attach a "Location:" URI for a part, it means "You can get
a replacement [part] at this location."

If you use a "Location:" URI for a whole message, it means "You
can get a replacement [message] at this location."

What's the dif?

Al