Classes
 ClassDescription
 AdvancedList An extension of the standard Flex List control.
 CheckBoxList A List that contains CheckBoxes to indicate selection rather than a colored background.
 PopUpThumbnail A thumbnail representation of an image that, when clicked, will display the full-size image as a modal popup.
 ZoomFrame Holds a DisplayObject which may be zoomed in or out by altering the scale property.