START-OF-SELECTION.
SET PF-STATUS '1200'.
WRITE 'test program'.
AT USER-COMMAND.
CASE sy-ucomm.
WHEN 'EXIT'.
IF sy-lsind = 1.
WINDOW STARTING AT 10 10 ENDING AT 30 20.
WRITE 'hello'.
WRITE / 'hello'.
EXIT.
ENDIF.
ENDCASE.