ACUCOBOL-GT supports five different sets of FILE STATUS code values. These five sets correspond with the values used by RM/COBOL-85,
               RM/COBOL version 2, Data General ICOBOL, VAX COBOL, and IBM DOS/VS COBOL. By default, ACUCOBOL-GT uses the RM/COBOL-85 values.
               
            
            
            You can select another set of file status codes at runtime by setting the configuration variable FILE_STATUS_CODES to one
               of the following values: 
            
            
            
               
               
                  
                     
                     
                     
                     
                        
                        
                           
                           | "74" | -RM/COBOL version 2 codes | 
                        
                        
                           
                           | "85" | -RM/COBOL-85 codes (default) | 
                        
                        
                           
                           | "DG" | -ICOBOL codes | 
                        
                        
                           
                           | "VAX" | -VAX COBOL codes | 
                        
                        
                           
                           | "IBM" | -IBM DOS/VS codes | 
                        
                     
                     
                  
                
               
             
            
            Note: The set of status codes used depends solely on the current setting of the FILE_STATUS_CODES variable and not on any compile-time
               settings. This is done to provide a consistent set of status codes to every program in a run unit. If you need to change the
               set of status codes during a run unit, you can do so with the SET ENVIRONMENT verb. Some programmers use this verb to ensure
               status code settings for a particular program, or in situations where programs that conform to the 1985 COBOL standard and
               programs that do not conform are both in use at a site.