How to trap for a CTRL-C on Unix or a CTRL-BREAK on Windows in Progress 4gl.

DO ON STOP UNDO, LEAVE:
REPEAT ON ERROR UNDO, LEAVE
……ON STOP UNDO, RETRY:
………IF RETRY THEN DO:
…………MESSAGE “Stop condition…” VIEW-AS ALERT-BOX.
…………QUIT.
………END.
END.
END.

see u…