Bug 120062 Default name of parameter and theme is not displayed as setting in preference.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/newelement/DesignElementFactory.java
*            column number of the grid. If it is less than 0, none column
	 *            will be added.
	 * @param rowNum
	 *            row number of the grid. If it is less than 0, none row will be
	 *            added.
	 * 
	 * @return a handle to the grid item
	 */
	public GridHandle newGridItem( String name, int columnNum, int rowNum )
	{
		String newName = getNewName( ReportDesignConstants.GRID_ITEM, name );
		return factory.newGridItem( newName, columnNum, rowNum );
	}
	/**
	 * Creates a new line item.
	 * 
	 * @param name
	 *            the optional line item name. Can be <code>null</code>.
	 * @return a handle to the line item
	 */
	public LineHandle newLineItem( String name )
	{
		String newName = getNewName( ReportDesignConstants.LINE_ITEM, name );
		return factory.newLineItem( newName );
	}
	/**
	 * Creates a new rectangle.
	 * 
	 * @param name
	 *            the optional rectangle name. Can be <code>null</code>.