In a minority of U.S. states (Florida, Colorado and Wisconsin), the parol rule of evidence is extremely strong and extrinsic evidence is always prevented from being used to interpret a contract. This is called the four-corner rule, and it is traditional/old. In a four-angle jurisdiction, there are two basic rules. First, the Tribunal will never accept parol evidence if the parties intend a comprehensive and fully integrated agreement; second, the court will only address Parol`s evidence if the available conditions are completely ambiguous. The policy is to prevent lies, to protect them from questionable veracity, to allow the parties to rely dearly on written contracts and the effectiveness of justice. In a case of multiple discovery, in 1846, Arnould Bonneville de Marsangy proposed to the civil court of Reims the idea of parole (which he called “preparatory exemptions”).   In order for the evidence to be covered by this rule, it must be either a written or oral notification made before the written contract is executed; or (2) an oral communication that occurs at the same time as the execution of the written contract. This rule does not exclude evidence of further disclosure, as it is permissible to prove a subsequent modification of the contract (although it may be inadmissible for another reason, such as the Fraud Act.
Similarly, evidence of an ancillary agreement – which would naturally and normally be in a separate handwriting – is not excluded. For example, if A.B contracts with B to paint B`s house for $1,000, B can introduce extrinsic evidence to show that A also ordered to paint B`s sheds for $100. The agreement to paint the shed would logically be in a separate document from the agreement to paint the house. The rule applies to parol evidence as well as other extrinsic evidence (for example. B written correspondence that does not constitute a separate contract) relating to a contract. When a contract is written down and is final for at least one (integrated) term, the published or extrinsic evidence is in principle excluded. :p 347 There are, however, a number of exceptions to this general rule, including for partially integrated contracts, separate reflection agreements, to resolve ambiguities or to create contractual defences. The practice of parodying enemy troops began thousands of years ago, at least in the days of Carthage.  Probation officers were able to end the burden of prisoners feeding and caring for them, while preventing prisoners from being readmitted to their former rows after release; It could also allow the kidnappers to recover their own men in a prisoner exchange.
Hugo Grotius, a former international lawyer, spoke positively about the parole of prisoners of war.  During the American Civil War, the Dix Hill Cartel and the Lieber Code were established for the conditional release of prisoners of war.  François Lieber`s thoughts on parole resurfaced later in the Brussels Declaration of 1874, the Hague Convention and the Geneva Convention on the Treatment of Prisoners of War.  For the rule to take effect, the contract in question must first be a definitive integrated handwriting; it must be, according to the Tribunal`s judgment, the final agreement between the parties (unlike a simple project, z.B.).