mutual discharge(Mutual discharge: occurs when both parties agree to cancel the contract while both still have unperformed obligations under the contract. In this case, the promise of one party to abandon rights under the original contract is given in consideration for a similar promise from the other party. Alexander Demidov)
opt out of a contract(The transformation of public obligation to personal responsibility is effected by the social contract; insofar as individuals opt out of the contract, they opt out of ... Alexander Demidov)
due date(the date on which an obligation must be repaid. WN3. Or, the chief asks to have his contract extended past its due date of September 2004 with a better deal. EDMONTON SUN (2003). Collins Alexander Demidov)