n-queens: commenting out the bits version

examples/programs/queens.mlw

@@ -163,6 +163,8 @@ end
 
 (* 2. More realistic code with bitwise operations **************************)
 
+(***
+
 theory BitwiseArithmetic
 
   use export int.Int
@@ -298,6 +300,8 @@ module NQueensBits
 
 end
 
+***)
+
 (*
 Local Variables:
 compile-command: "unset LANG; make -C ../.. examples/programs/queens.gui"