// cleanup
            //SavedSettings backup;

            // setup
            public CommonVars()
            {
                conventions = new SwaptionMarketConventions();
                conventions.setConventions();
                atm = new AtmVolatility();
                atm.setMarketData();
                atmVolMatrix = new RelinkableHandle <SwaptionVolatilityStructure> (new
                                                                                   SwaptionVolatilityMatrix(conventions.calendar,
                                                                                                            conventions.optionBdc,
                                                                                                            atm.tenors.options,
                                                                                                            atm.tenors.swaps,
                                                                                                            atm.volsHandle,
                                                                                                            conventions.dayCounter));
                termStructure = new RelinkableHandle <YieldTermStructure>();
                termStructure.linkTo((new FlatForward(0, conventions.calendar,
                                                      0.05, new Actual365Fixed())));
            }