Bug 315181 [Automation][Regression]Grid border was messed in PDF
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/nLayout/area/impl/RowArea.java
if ( colSpan > 1 && content.isRTL( ) )
		{
			columnID += colSpan - 1;
		}
		cArea.setPosition( getTableArea( ).getXPos( columnID ), 0 );
	}
	public void addChild( IArea area )
	{
		children.add( area );
		this.setCell( (CellArea) area );
	}
	
	public void addChildByColumnId( CellArea cell )
	{
		int columnId = cell.getColumnID( );
		int index = 0;
		for ( int i = 0; i < children.size( ); i++ )
		{
			CellArea current = (CellArea) children.get( i );
			if ( current.getColumnID( ) >= columnId )
			{
				index = i;
				children.add( index, cell );
				setCell( cell );
				return;
			}
		}
		children.add( children.size( ), cell );
		setCell(cell);
	}