Abs                      Returns the Absolute Value of a Number

 Abs(Val : Real) : Real;
 Abs(Val : Integer) : Integer;

    Returns the absolute value of Val. That is, if Val is greater than or
    equal to 0, Abs returns Val; otherwise, Abs returns -Val.

             Val    An integer or real value (constant, variable, function
                    call, or expression).

         Limits:    none

  -------------------------------- Example ---------------------------------

           I := Abs(-10);           { I = 10 }
           X := Abs(4.21)           { X = 4.21 }