Hi. Welcome to our room on bank accounts in our House of cash management. What I want to do here is to give you a summary of how bank accounts work. To start off with, I'd like you to take some time and think about your own bank account. Think about how many items you've got going in it, how many payments you make. More often than not, for most people, their bank accounts are just in a single currency, and therefore everybody would say a fairly simple liquidity solution. If I let you go through my bank account, I have one bank account. I have one item paid in my salary every month. I have maybe a dozen payments going out every month. The big one being for the credit card, it's all in one currency, great British Pounds as I live in the UK. And my liquidity solution is I look at the balance of that bank account and I either decide to invest money or to request an overdraft. Pretty simple. So my optimal solution, one bank account, probably. Now think about this. If I'm a global treasurer, I'm sitting here, I've got to look after the bank accounts of many different legal entities. Some of those legal entities are in more than one geography across all of my legal entities. I'm in many different geographies. Many different geographies mean I'm probably looking at many different currencies. I've got not one item going in a month. I've got thousands of items being paid into my accounts every month. I haven't just got 10 items being paid every month. I've got tens of thousands of items being paid every month. I've got to look upon this in a multicurrency way across many different geographies. Now, is that multiple liquidity solutions required, or maybe it's just a handful, or maybe it's just one liquidity solution. In essence, they all follow the same principles.