In some relationships, which involve an original contract between parties involved, there may be a change in circumstances that call for an alteration of the original contract. In order to protect themselves, parties may want to enter into an additional, subsequent contract which clarifies the changes in the relationship. This new contract usually explains the new terms of the contract and also restates which, if any, remaining portions of the old contract are still in place. This document can be used as a written acknowledgment of such modifications to an original agreement.
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