As chair, I'm looking at the practical application of this. Let's look at the scenario. If we make an invitation and the response we get is inconclusive and they're not sure whether or not they're available, I guess I would look for a bit of advice from the committee as to what would then trigger the summons—which, as Mr. Naqvi pointed out, exists anyway. Help paint the picture for me as to when I would actually take that step.
Mr. Villemure is first and then Mr. Chong.