Concentrate

During structured encounters, most game effects only last until the end of the character's next turn, some effects can be extended an additional round if the character using a maneuver to "concentrate" on the effect. If this occurs, the effect expires on the next round instead (unless of course the character uses yet another maneuver to extend the effects - potentially doing so indefinitely) 
Each concentrate maneuver can extend only one effect (unless stated otherwise) however additional effects can be extended by subsequent uses of the concentrate maneuver during the same turn. (provided of course, that the character has the ability to perform the successive maneuvers.)