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
* The meta object literal for the '<em><b>Height</b></em>' attribute feature.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @generated
		 */
		EAttribute SIZE__HEIGHT = eINSTANCE.getSize_Height( );
		/**
		 * The meta object literal for the '<em><b>Width</b></em>' attribute feature.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @generated
		 */
		EAttribute SIZE__WIDTH = eINSTANCE.getSize_Width( );
		/**
		 * The meta object literal for the '{@link org.eclipse.birt.chart.model.attribute.impl.StyleImpl <em>Style</em>}' class.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @see org.eclipse.birt.chart.model.attribute.impl.StyleImpl
		 * @see org.eclipse.birt.chart.model.attribute.impl.AttributePackageImpl#getStyle()
		 * @generated
		 */
		EClass STYLE = eINSTANCE.getStyle( );
		/**
		 * The meta object literal for the '<em><b>Font</b></em>' containment reference feature.
		 * <!-- begin-user-doc -->
		 * <!-- end-user-doc -->
		 * @generated
		 */
		EReference STYLE__FONT = eINSTANCE.getStyle_Font( );
		/**