The court may enforce by power of contempt the provisions of a deed, agreement, or settlement that are merged into a divorce decree. The court may enforce by power of contempt or as an independent contract not superseded by the divorce decree the provisions of a deed, agreement, or settlement that contain language that the deed, agreement, or settlement is incorporated but not merged into a divorce decree. The court may modify any provision of a deed, agreement, or settlement that is: incorporated, whether or not merged, into a divorce decree; and subject to modification under § 8-103 of this subtitle.