OPINION
McDERMOTT, Justice.
The parties to this action, Marlene and Michael Knorr were married on April 26, 1978 and later separated. Their union produced two children, Crystal and Melissa, whose support as outlined in their parent's settlement agreement is the subject of this litigation. As the record discloses an agreement was reached on June 2, 1986, which for the purposes of this opinion provided in relevant part as follows:
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