CLS

PRINT "Enter -1 if you're  done. "
INPUT "Enter a limit number: ", Limit
DO UNTIL  Limit = -1
    FOR Count = 1 TO Limit
        SUM = SUM + COUNT
        PRINT Sum: SLEEP 2
    NEXT Count
    PRINT "Remember, entering 'Finished' will end the program."
    INPUT "Enter the next limit number: " , Limit
LOOP
END