- o -

• opacity() : bridges.edge.Edge , bridges.element.Element , bridges.element_visualizer.ElementVisualizer , bridges.link_visualizer.LinkVisualizer , bridges.symbol.Symbol
• orientation() : bridges.bar_chart.BarChart
• other() : bridges.data_src_dependent.amenity.Amenity
• out_going_edge_set_of() : bridges.graph_adj_list.GraphAdjList