file filter popup at *top* of save panel

FROM : Andy Lee
DATE : Sun Jun 25 17:21:27 2006

TextWrangler has a popup menu at the *top* of the save panel (not in 
the accessory view) with the following options:

  * All Readable Files
  * All Files
  --
  * Text files
  * PICT files
  * QuickTime Movies
  * QuickTime Images

How did that popup menu get there?  Is there some way of adding a 
second accessory view?  I've seen similar popups in other apps.

--Andy