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 FRACTION_NUMBER_FORMAT_SPECIFIER__PRECISE = FORMAT_SPECIFIER_FEATURE_COUNT + 0;
	/**
	 * The feature id for the '<em><b>Fraction Digits</b></em>' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int FRACTION_NUMBER_FORMAT_SPECIFIER__FRACTION_DIGITS = FORMAT_SPECIFIER_FEATURE_COUNT + 1;
	/**
	 * The feature id for the '<em><b>Numerator</b></em>' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int FRACTION_NUMBER_FORMAT_SPECIFIER__NUMERATOR = FORMAT_SPECIFIER_FEATURE_COUNT + 2;
	/**
	 * The feature id for the '<em><b>Prefix</b></em>' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int FRACTION_NUMBER_FORMAT_SPECIFIER__PREFIX = FORMAT_SPECIFIER_FEATURE_COUNT + 3;