minput(input_x_values = [-15.00, 0.00, 15.00], input_y_values = [50.00, 30.00, 50.00]) mgraph(graph_line_colour = "red", legend_user_text = " My red curve ", graph_symbol = "on", graph_symbol_marker_index = 15, graph_symbol_colour = "black", graph_symbol_height = 1.00, legend = "on", graph_line_thickness = 8)