A more thorough explanation:

An entire-contract clause, also known as an entire-agreement clause, is a provision in a contract that states that the entire agreement between the parties is contained within the contract. This clause is often found in insurance contracts and can include the application, declarations, insuring agreement, exclusions, conditions, and endorsements.

For example, a homeowner's insurance policy may have an entire-contract clause that states that the policy and any attached documents represent the entire agreement between the homeowner and the insurance company. This means that any discussions or agreements made outside of the written contract are not considered part of the agreement.

The purpose of an entire-contract clause is to prevent misunderstandings or disputes about what was agreed upon between the parties. By including all terms and conditions in the written contract, both parties can refer to the same document to resolve any issues that may arise.