FlexBuilder ActionScript Project's Stage Dimension Width and Height

I spent a good day or so trying to figure out why my stage dimensions were so out of whack when I compiled my Flash AS3 project out of FlexBuilder 3. I tried specifying the width and height in the HTML, I tried setting the stage dimensions via this.width and this.height, I tried combinations of various width and height settings all to no avail.

I searched with a plethora of keywords "actionscript" "project" "scale" "dimensions" "programmatically" "setting" "stage" "width" "height" "huge" "large" "SWF" "SDK" "flexbuilder" "3" "3.3" "3.2" but the combination that finally got me what I was looking for was "flash actionscript setting swf width height"

The solution that fixed my problem is in bold below:

package
{
  [SWF(width=1024,height=768)]
  public class Master extends Sprite
  {
      public function Master(){}
   }
}

It's really very simple, although something I had never come across before. I made the jump from Flash directly to Flex without ever working with pure ActionScript projects until now.