ge file, the <code>root</code> property is the Bitmap object
itself. For the instance of the main class of the first SWF file loaded,
the <code>root</code> property is the display object itself. The
<code>root</code> property of the Stage object is the Stage object itself.
The <code>root</code> property is set to <code>null</code> for any display
object that has not been added to the display list, unless it has been
added to a display object container that is off the display list but that
is a child of the 