To supersede the requirements of Sentence 3.3.1.13.(3) by waiving the requirement for a fire separation between the stage and the seating area on the basis that the building is sprinklered throughout and a sprinkler deluge system is installed at the stage opening.
This is to limit the probability that a fire originating in the stage or other parts of the building will not be controlled or suppressed, which could lead to the spread of fire to the seating area, which could lead to damage to the building.