Format 1: SORT statement

1  SORT   +  ? ON
2.1 ASCENDING
2.1 DESCENDING
1? KEY
1 +  ? ? WITH DUPLICATES? IN? ORDER? ? COLLATING SEQUENCE? IS 
1  USING +  
1  INPUT PROCEDURE? IS ? 
2.1 THROUGH
2.1 THRU
1 
1  GIVING +  
1  OUTPUT PROCEDURE? IS ? 
2.1 THROUGH
2.1 THRU
1