Bug 120918 Usability: Tabs above and below Layout Editor are confusing
In BIRT 2.0 (I'm using M3), the Layout Editor has tabs above and below the editor window to give the developer different views. Top: Normal, Master Page, Source Bottom: Layout, Preview, Script What is not clear initially from the UI is that the bottom choices are only available with the "Normal" top choice. In addition, the "Source" label is not clear -- implication is that this is (programatic) source code. The Usability team should look at this to determine what improvements could be made, but a suggestion would be to flatten this into a top set of tabs only: Report Layout, Master Page, Script, XML Report Design, Preview
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
* 
	 * @param parent
	 * @param child
	 * @return slot ID
	 */
	public static int findSlotID( Object parent, Object child )
	{
		assert parent instanceof DesignElementHandle;
		assert child instanceof DesignElementHandle;
		int slotID = ( (DesignElementHandle) parent ).findContentSlot( (DesignElementHandle) child );
		return slotID;
	}
	/**
	 * Get the slot id of child If the slot id was not found, returns the
	 * default slot id
	 * 
	 * @param parent
	 * @param child
	 * @return slot id
	 */
	public static int getSlotID( Object parent, Object child )
	{
		assert parent instanceof DesignElementHandle;
		int slotID = -1;
		if ( child != null )
		{
			slotID = findSlotID( parent, child );
		}
		else
		{