IDENTIFICATION DIVISION. PROGRAM-ID. string-case-extensions. DATA DIVISION. WORKING-STORAGE SECTION. 78 example VALUE "alphaBETA". 01 result PIC X(9). PROCEDURE DIVISION. DISPLAY "Example: " example *> ACUCOBOL-GT MOVE example TO result CALL "C$TOLOWER" USING result, BY VALUE 9 DISPLAY "Lower-case: " result MOVE example TO result CALL "C$TOUPPER" USING result, BY VALUE 9 DISPLAY "Upper-case: " result *> Visual COBOL MOVE example TO result CALL "CBL_TOLOWER" USING result, BY VALUE 9 DISPLAY "Lower-case: " result MOVE example TO result CALL "CBL_TOUPPER" USING result BY VALUE 9 DISPLAY "Upper-case: " result GOBACK .