The number of deals in play at the moment. This increases until Bid has found enough qualifying deals, and decreases as you play them. Deal Types Deals are generated randomly, and then checked to see if they match the deal type you specified. If not, they are thrown out, and more are generated until there are enough. If you specify a rare type, such as a deal containing an 12 card suit, it will take a very long time to find the deals.
Some types take a parameter.
If you select such a type, then the text field to the right of the type selector will become active, and you can enter a value there. No 5 card major. No 6 card minor. No 5 card major. No 6 card minor.