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 -->
	 * 
	 * @generated
	 * @ordered
	 */
	int URL_VALUE__BASE_URL = ACTION_VALUE_FEATURE_COUNT + 0;
	/**
	 * The feature id for the '<em><b>Target</b></em>' attribute. <!--
	 * begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 * @ordered
	 */
	int URL_VALUE__TARGET = ACTION_VALUE_FEATURE_COUNT + 1;
	/**
	 * The feature id for the '<em><b>Base Parameter Name</b></em>' attribute.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int URL_VALUE__BASE_PARAMETER_NAME = ACTION_VALUE_FEATURE_COUNT + 2;
	/**
	 * The feature id for the '<em><b>Value Parameter Name</b></em>' attribute.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int URL_VALUE__VALUE_PARAMETER_NAME = ACTION_VALUE_FEATURE_COUNT + 3;
	/**
	 * The feature id for the '<em><b>Series Parameter Name</b></em>' attribute.