Okay, thank you.
Maybe I'll just totally change gears here. There are so many transactions that occur within your department--literally hundreds and thousands, potentially millions, I suppose. With the invoices that flow back and forth and the checks and balances, could you tell me what kind of a system you have, or whether you have a system, to ensure that there has been delivery of a product before the cheque is issued or cut for that? In other words, have there been instances in which a product has not been delivered and yet payment has been made? Are you aware of any instances of such, or is that basically under control?