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  1. Please note that the Unfold parameter may be "NullString" when unfolding is not necessary;
  2. The query arguments are not required. When you use an unfold parameter and no query arguments the function is almost equal to the UNFOLD#() function. Only the modes of theUNFOLD#() function are missing;

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To unfold a Telitab set for a particular parameter implies that the record(s) containing this parameter are moved to the top of the hierarchy. If UnfoldPar$ = "NullString", no unfolding is performed. 

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