type  Gradepoints = 0.0..4.0;
	      Numbers = integer;
	      Alphabet = 'Z'..'A';


	Which of the following are legal....NONE ARE!
	Cannot have subranges of real type
	Cannot do this, must be  Numbers = 1..500;
	Cannot do this, must be  Alphabet = 'A'..'Z'   as 'A' comes before 'Z'