Bug 312761 It makes no difference changing the series labels position in Radar chart.[13]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/type/impl/PieSeriesImpl.java
result.append( ", leaderLineStyle: " ); 
		if ( leaderLineStyleESet )
			result.append( leaderLineStyle );
		else
			result.append( "<unset>" ); 
		result.append( ", leaderLineLength: " ); 
		if ( leaderLineLengthESet )
			result.append( leaderLineLength );
		else
			result.append( "<unset>" ); 
		result.append( ", ratio: " ); 
		if ( ratioESet )
			result.append( ratio );
		else
			result.append( "<unset>" ); 
		result.append( ", rotation: " ); 
		if ( rotationESet )
			result.append( rotation );
		else
			result.append( "<unset>" ); 
		result.append( ", clockwise: " ); 
		if ( clockwiseESet )
			result.append( clockwise );
		else
			result.append( "<unset>" ); 
		result.append( ')' );
		return result.toString( );
	}
	/**
	 * A convenience method to create an initialized 'Series' instance