The invention provides compounds, compositions and methods relating to novel arylsulfonanilide derivatives and their use as pharmacologically active agents. The panel may include scored edges that ease installation. Optical fibers are routed from drop and distribution cables through a plurality of routing paths to splice trays for connection to other optical fibers. The uppermost layer 4b is formed of a material composed mainly of a nitride, an oxide, an oxynitride, a carbide, a carbonitride, or an oxycarbonitride of at least one or more elements selected from Si and Cr. The gate of the single switching transistor may be controlled by a control signal generator coupled to the amplifier core. The electronic component is mounted in the opening and is electrically connected to the non-cavity layer exposed through the opening.