Bug 117149 Add additional datapoint markers
I would like to propose adding additional datapoint markers. Attached is a set of markers I would like supported.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/attribute/AttributePackage.java
* <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for data type '<em>Anchor Object</em>'.
	 * @see org.eclipse.birt.chart.model.attribute.Anchor
	 * @model instanceClass="org.eclipse.birt.chart.model.attribute.Anchor"
	 *        extendedMetaData="name='Anchor:Object' baseType='Anchor'" 
	 * @generated
	 */
	EDataType getAnchorObject( );
	/**
	 * Returns the meta object for data type '{@link org.eclipse.birt.chart.model.attribute.AngleType <em>Angle Type Object</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for data type '<em>Angle Type Object</em>'.
	 * @see org.eclipse.birt.chart.model.attribute.AngleType
	 * @model instanceClass="org.eclipse.birt.chart.model.attribute.AngleType"
	 *        extendedMetaData="name='AngleType:Object' baseType='AngleType'" 
	 * @generated
	 */
	EDataType getAngleTypeObject( );
	/**
	 * Returns the meta object for data type '{@link org.eclipse.birt.chart.model.attribute.AxisType <em>Axis Type Object</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for data type '<em>Axis Type Object</em>'.
	 * @see org.eclipse.birt.chart.model.attribute.AxisType
	 * @model instanceClass="org.eclipse.birt.chart.model.attribute.AxisType"
	 *        extendedMetaData="name='AxisType:Object' baseType='AxisType'" 
	 * @generated
	 */
	EDataType getAxisTypeObject( );
	/**