EXIT CONSTRUCT instruction
The EXIT CONSTRUCT instruction terminates the CONSTRUCT
instruction and resumes the program execution at the instruction following the
CONSTRUCT block.
CONSTRUCT BY NAME where_part ON ...
  ...
  ON ACTION exit_now
    EXIT CONSTRUCT
  ...
END CONSTRUCTPerforming an EXIT CONSTRUCT instruction during a dialog is equivalent to
canceling the dialog: No field validation will occur, and the AFTER FIELD or AFTER CONSTRUCT blocks will
not be executed.
EXIT CONSTRUCT does not set int_flag to TRUE as when the cancel action is fired.
The EXIT CONSTRUCT instruction can only be used in a singular
CONSTRUCT dialog, it cannot be used in a DIALOG / END DIALOG
multiple dialog block.