/h3><div class="doc"><p>The current scaling grid that is in effect. If set to <code>null</code>,
the entire display object is scaled normally when any scale transformation
is applied.</p>
<p>When you define the <code>scale9Grid</code> property, the display
object is divided into a grid with nine regions based on the
<code>scale9Grid</code> rectangle, which defines the center region of the
grid. The eight other regions of the grid are the following areas:</p><ul><li>The upper-left corner outside of the recta