In a marriage dissolution action, trial court's orders are affirmed where: 1) an order confirming an arbitration award was preliminary to further proceedings and interlocutory, and thus any appeal must be dismissed; 2) the order that plaintiff pay part of defendant's income tax obligation was valid as defendant had no duty or implied duty under their marital settlement agreement or under the Civil Code to choose a tax filing status that would result in the smallest tax liability for him; 3) the court did not abuse its discretion in imposing sanctions on plaintiff.