41b0372c_be_Flex_4_6___Using_containers__Description
[Container] Group [Type] Layout [For more information] The Spark Group and Spark SkinnableContainer containers [Description] 
Simple container that lays out it children, including graphic children, based on the specified layout. The default layout is absolute. Flex defines subclasses of Group: HGroup with horizontal layout, VGroup with vertical layout, and TileGroup with tile layout.
Adobe Flex 4.6 * Using containers