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
* Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.attribute.TextAlignment#getHorizontalAlignment <em>Horizontal Alignment</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Horizontal Alignment</em>'.
	 * @see org.eclipse.birt.chart.model.attribute.TextAlignment#getHorizontalAlignment()
	 * @see #getTextAlignment()
	 * @generated
	 */
	EAttribute getTextAlignment_HorizontalAlignment( );
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.attribute.TextAlignment#getVerticalAlignment <em>Vertical Alignment</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Vertical Alignment</em>'.
	 * @see org.eclipse.birt.chart.model.attribute.TextAlignment#getVerticalAlignment()
	 * @see #getTextAlignment()
	 * @generated
	 */
	EAttribute getTextAlignment_VerticalAlignment( );
	/**
	 * Returns the meta object for class '{@link org.eclipse.birt.chart.model.attribute.TooltipValue <em>Tooltip Value</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for class '<em>Tooltip Value</em>'.
	 * @see org.eclipse.birt.chart.model.attribute.TooltipValue
	 * @generated
	 */
	EClass getTooltipValue( );
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.attribute.TooltipValue#getText <em>Text</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Text</em>'.
	 * @see org.eclipse.birt.chart.model.attribute.TooltipValue#getText()