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Heard this term a lot recently. I'm at work so most of the sites Google came back with are blocked. Anyone have any insight? Thanks.
-Marc -
Basically, you're doubling your action with your opponent, or another player. Let's say I'm playing heads-up with you, and I agree to cross-book with a third party. If I win $500 playing with you, Mr. X owes me an additional $500. If you win $500, I owe Mr. X $500 too.








