PageLayout is used to layout areas of a page. The PageLayout should be used for the RootElement of the topmost view in the view hierarchy of the application. Don't use a second PageLayout in views which are nested into the topmost view.
You can insert up to nine PagePanels into the PageLayout These view elements are used as a panel of a page layout. Each panel can have a background color and different borders. The different panels are defined as follows:
The following graphic illustrates the arrangement of these panels on the view:
To enable the user to use hot keys, you can set the property handleHotkeys to true .
Javadocs on IWDPageLayout: http://help.sap.com/javadocs