Vector graphics: The optimizer!

When importing vector graphics into Flash Catalyst, all aspects of the graphics, the strokes, fills, and paths, are all represented by code. When publishing your final project, you can optimize its performance by converting these vector graphics to optimized graphics using the Flash Catalyst Heads-up Display (HUD). The HUD is the gray and black floating panel that changes its options based on the currently selected object. If you're handing your project off to Adobe Flash Builder 4, optimizing your graphics will extract all of that vector code into an external file.