Bug 312761 It makes no difference changing the series labels position in Radar chart.[13]
chart/org.eclipse.birt.chart.ui/src/org/eclipse/birt/chart/ui/util/ChartUIUtil.java
{
		public abstract void setText( String string );
		public abstract String getText( );
		public abstract void removeAll( );
		public abstract void setItem( int index, String string );
		public abstract void setItems( String[] items );
		public abstract String[] getItems( );
		public abstract void add( String string );