ABAP Programs : Using the events start-of-selection and end-of-selection

REPORT ZSOURCE1503.
* Work area
TABLES BOOKINGS.
* Initial processing
START-OF-SELECTION.
WRITE / ‘Start’.
* Reading data
GET BOOKINGS.
WRITE: AT /3 BOOKINGS-FLDATE.
* Final processing
END-OF-SELECTION.
WRITE / ‘Finished’.