doc-src/IsarAdvanced/Codegen/Thy/examples/bool_literal.ML

 structure HOL = 
 struct
 
-datatype boola = True | False;
+datatype boola = False | True;
 
 fun anda x True = x
   | anda x False = False
   | anda True x = x
   | anda False x = False;

 end; (*struct HOL*)
 
 structure Nat = 
 struct
 
-datatype nat = Zero_nat | Suc of nat;
+datatype nat = Suc of nat | Zero_nat;
 
 fun less_nat n (Suc m) = less_eq_nat n m
   | less_nat n Zero_nat = HOL.False
 and less_eq_nat (Suc n) m = less_nat n m
   | less_eq_nat Zero_nat m = HOL.True;