How to know which directory contains the file that I'm editing in TextEdit? Very basic question - I am editing a file using the basic system TextEdit app.  As I actually have the file in question in several locations, how can I tell what directory the one that I am editing is actually residing in.

In Linux and Windows I can find this out easily but this does not seem obvious on my Mac.

This is using the basic TextEdit on my Mac and my Mac is OSX Lion 10.7.5
Hold down the Command or Ctrl key and click on the icon or file name in the center of the title bar of text edit's document window. 



Be sure to click on the title itself. The containing directory structure will be shown in reverse-hierarchical order.