Determines the method for reading and writing files during SORT operations. 
                   
               
            
 
            
            
               Parameters
 
                
               
                
                   
                  
                  - 0 or 1 
                     
                  
  
                  
                  - SORT operations use CBL_ routines, where possible, which improves performance. 
                     
                  
  
                   
                   
                  
                  - 2 
                     
                  
  
                  
                  - SORT operations use the file handler, so that format modifications are picked up from the 
                     extfh.cfg file. 
                     
                  
  
                   
                  
               
 
               
               The default value is 0.