Holding One's Fire
If a player has initiative, his character may hold off his attack until an opponent is within the best possible range. In other words, the opponent (loser of initiative) may move according to his plans, but the attacker does not have to attack until the opponent is about to strike. (A good example is a character defending against a Charging opponent. That character chooses to hold his attack until the opponent is right on top of him then lets loose.)