.. or you just have some good old fashioned code for such a blocking rule? (I'm sort of joking, I can kind of see how that might be useful, I just don't think

.. or you just have some good old fashioned code for such a blocking rule? (I'm sort of joking, I can kind of see how that might be useful, I just don't think that's an example and can't think of a better one at the moment.)