A medium, method, and apparatus are disclosed for eliding superfluous function invocations in a vector-processing environment. The flame resistant LED construction of this embodiment comprises a substrate, one or more LEDs that emits light mounted on the substrate, and an intumescent material adjacent to the LEDs. The computer system monitors the proof decision status of the proofing file. The front surface of the second microelectronic element can partially overlie a rear surface of the first microelectronic element and can be attached thereto. A back panel disposed in the cavity adjacent to base back wall defines a duct in a fluid communication with a plurality of elongated openings formed in the back panel.