The CODE-SET clause specifies the alphabet to use for a sequential file. 
            
            
               General Format
               
               CODE-SET IS alphabet
                
            
            
               Syntax Rules
               
               
               
                  
                  - alphabet is the name of an alphabet declared in the SPECIAL-NAMES section. 
                  
- The CODE-SET clause may be associated only with a sequential file. 
- If the CODE-SET clause is used, then only USAGE DISPLAY items may appear in the file's record description entry. Furthermore,
                     every signed numeric field must have a SIGN IS SEPARATE clause. 
                  
 
            
            
               General Rule
               
               
               The CODE-SET clause associates a character set with a sequential file. If the character set is not the native character set,
                  then a translation to the native set is also implied.