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A federal judge issued a preliminary injunction against software designed by Avant Corp., ordering the Fremont, Calif.-based company to stop marketing or selling any Cadence Design Systems Inc. software product. Avant said the order will have no impact on its customers or current products. . . . An independent reviewer will have 18 months to examine the books of municipal bond dealer Pacific Genesis Group Inc. of San Francisco under a deal struck with the state Department of Corporations, which sued the firm, accusing it of defrauding investors by failing to disclose the risks of tax-exempt municipal bonds that helped finance speculative real estate deals. . . . CUC International Inc. and HFS Inc. completed their $14-billion merger and will take a fourth-quarter charge of $560 million. The combined company will be called Cendant Corp.