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(:Test: op-subtract-times-6                              :)
(:Written By: Carmelo Montanez                           :)
(:Date: June 27, 2005                                    :)
(:Purpose: Evaluates The "subtract-times" operator that  :)
(:is used as an argument to the fn:number function.      :)
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fn:number(xs:time("13:00:00Z") - xs:time("12:00:00Z"))