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Web Dynpro LayoutData API -
IWDLayoutDataEach UI element contains user-defined layout specifications. These affect and determine the alignment of the UI element with the other UI elements or the borders of the grid layout cells.
The LayoutData class is the abstract base class of all LayoutData classes within Web Dynpro. The LayouData subclasses inherit all properties of this class.
The available LayoutData classes include the classes FlowData, GridData, MatrixData, and RowData. These classes are used to control:
· Padding between individual UI elements and between the UI element and the grid cell
· Horizontal and vertical alignment of the UI elements within the grid layouts
· Width and height of the UI element in the grid layout cell

Note that you must add the character string Data at the end of the LayoutData class names if you want to access the classes by name.
