To add to what Crow said, and using the hypothetical example at the bottom of the page,...
Number of banks 13
...we find that 13 charter banks participated. This is a somewhat average number. Methinks the more the merrier.
We then find two exchange rates. We find this because the CBI both bought and sold - normally they just sell (the top number). From this example, they sold 37,000,000 USDs to the banks. The banks bought these dollars with dinar at an exchange rate of 1170. So if you take the Amount Sold (37,000,000 USD) and multiply it by the exchange rate (Auction Price Selling = 1170), you get 43,290,000,000 dinar. Or, in other words, the banks went down to the CBI, handed over 43,290,000,000 dinar, and in return the CBI gave them $37,000,000.
Auction price selling dinar / US $ 1170
Auction price buying dinar / US $ 1168
Amount sold at auction price (US $) 37.000.000
Amount purchased at Auction price (US $) 2.400.000
Okay. So we understand that the CBI sold 37,000,000 USDs to the charter banks (for dinar) at an exchange rate of 1170. This is an example of the banks preferring the dollar to the dinar because they're getting rid of their dinar for dollars instead.
But on this occassion some banks also sold some of their dollars to the CBI. From the CBI's perspective this is the Amount Purchased, or the second line. From our example, the CBI bought 2,400,000 USDs from the banks, and in return gave them dinar at an exchange rate of 1168. So if we were to multiply 2,400,000 x 1168, we would understand that the CBI purchased $2,400,000 from the banks and gave them 2,803,200,000 dinar in return. This is an example of the banks preferring the dinar to the dollar because they're selling their dollars to the CBI and getting dinar instead.
This days' results showed they wanted some dinar - some 2,400,000 USDs worth - but it also shows they sold 37,000,000 USDs worth of dinar too, and so the difference is 34,600,000 USDs in favor of demand for the dollar.
When the Amount Purchased is greater than the Amount Sold this is what is called 'reversion'. This simply means that demand for the dinar is outpacing demand for the dollar because the banks are selling their dollars to the CBI for dinar. This is what we want.
So, the lower the demand is for the dollar the better. If you want icing on top of the cake, a low demand for the dollar and an even greater demand for the dinar (reversion) is the way to go.
I hope this helps...

Number of banks 13
Auction price selling dinar / US $ 1170
Auction price buying dinar / US $ 1168
Amount sold at auction price (US $) 37.000.000
Amount purchased at Auction price (US $) 2.400.000
Total offers for buying (US $) 37.000.000
Total offers for selling (US $) 2.400.000
Last edited by Sponson; 02-22-2009 at 05:27 AM.
Reason: Syntax
The Lop. It's for real...