HYTOS

            for component in [component for component in components if

                              component['Name'] == 'VendorPackage' and component['SymbolType_UID'] == -1]:

                item = QEngineeringVendorItem.from_database(component)

            # connect flow item to line

            for line in lines:

            for unknown in root.iter('UNKNOWN'):

                item = QEngineeringUnknownItem.fromXml(unknown)

                if item is not None:

                    item.transfer.onRemoved.connect(self.itemRemoved)

                    self.graphicsView.scene.addItem(item)