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                                                                      EXHIBIT 23

                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS



     As independent public accountants, we hereby consent to the incorporation
of our reports included in this Form 10-K, into the Company's previously filed
Form S-8 Registration Statements File Nos. 333-51607, 333-20673, 333-01789 and
33-87782.




Arthur Andersen LLP

Dallas, Texas
September 30, 1998