41b0372c_be_Flex_4_6___Using_containers__Description
[Container] SkinnableDataContainer [Type] Layout [For more information] The Spark DataGroup and Spark SkinnableDataContainer containers [Description] 
Skinnable container that lays out it children, including data items, based on the specified layout. This container supports skinning. The default layout is vertical.
Adobe Flex 4.6 * Using containers