Classes
 ClassDescription
 FlxAnim Just a helper structure for the FlxSprite animation system
 FlxDebugger 
 FlxList The world's smallest linked list class.
 FlxMonitor FlxMonitor is a simple class that aggregates and averages data.
 FlxPreloader This class handles the 8-bit style preloader.
 FlxQuadTree A fairly generic quad tree structure for rapid overlap checks.
 FlxReplay 
 FlxSound This is the universal flixel sound object, used for streaming, music, and sound effects.
 FlxTile 
 FlxTilemapBuffer 
 FlxWindow