Thestage scale modes are designed for use in a environments such asa web browser where you don't always have control over the sizeor aspect ratio of the stage. The modes let you choose the leastbad compromise when the stage does not match the ideal size or aspectratio of your application. In AIR, you always have control of thestage, so in most cases re-laying out your content or adjusting thedimensions of your window will give you better results than enablingstage scaling.