December 1, 1999
      
                  
        
  Author(s)
  Allison  Barnard Feeney,   David M. Price
 
       
            
    
    
        This paper presents the current direction in the architecture of STEP (STandard for the Exchange of Product model data, ISO 10303). STEP is an international standard designed to enable the exchange of product data between heterogeneous computer systems