FALSE
FALSE is a predefined constant to be used
in boolean expressions.
Syntax
FALSEUsage
FALSE is a predefined constant that can be used as a boolean value in boolean expressions.
The FALSE constant is equal to 0 (zero).
TRUE and FALSE are         typically
used as return values of functions that give a binary result.
Example
MAIN
  DEFINE odd BOOLEAN
  LET odd = is_odd(125763)
  IF odd THEN
     DISPLAY "Number is odd."
  END IF
END MAIN
FUNCTION is_odd(value)
  DEFINE value INTEGER
  IF value MOD 2 = 1 THEN
     RETURN TRUE
  ELSE
     RETURN FALSE
  END IF
END FUNCTION