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/util/LiteralHelper.java
/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/
package org.eclipse.birt.chart.util;
import java.util.Iterator;
import java.util.List;
import org.eclipse.birt.chart.model.attribute.ActionType;
import org.eclipse.birt.chart.model.attribute.Anchor;
import org.eclipse.birt.chart.model.attribute.AxisType;
import org.eclipse.birt.chart.model.attribute.CursorType;
import org.eclipse.birt.chart.model.attribute.DataPointComponentType;
import org.eclipse.birt.chart.model.attribute.DataType;
import org.eclipse.birt.chart.model.attribute.DateFormatDetail;
import org.eclipse.birt.chart.model.attribute.DateFormatType;
import org.eclipse.birt.chart.model.attribute.Direction;
import org.eclipse.birt.chart.model.attribute.GroupingUnitType;
import org.eclipse.birt.chart.model.attribute.IntersectionType;
import org.eclipse.birt.chart.model.attribute.LeaderLineStyle;
import org.eclipse.birt.chart.model.attribute.LegendBehaviorType;
import org.eclipse.birt.chart.model.attribute.LegendItemType;