[glen]

I found it on p.43. . . ."The semi-float is when you take advantage of loose aggressive opponents in heads-up situation by calling the flop with a any two cards, hoping to pick up the pot with a bet on the turn, but as opposed to a pure float, you also have outs to improve to the best hand, such as a gutshot or a backdoor flush draw plus overcard. In these instances, a flop call may be seen as more dangerous than a raise, since the loose aggressive player may understand that you are going to play passively and let him bluff away his chips with his dust. if the turn does not get bet, you have an opportunity to bet and will most likely win the pot right there. . . "