A lamp includes a substrate, a first lighting unit and a second lighting unit. The method includes providing a dome assembly that includes at least one cooling slot lip and at least one filler projection, wherein a gap defined between the cooling slot lip and the at least one filler projection has a height defined between cooling slot lip and the at least one filler projection that is substantially uniform through the gap. For example, in at least some embodiments, the strongly typed variable is a people type that allows the tag to be associated with an individual person or group of people by virtue of a unique identification that is associated with the person or group. The back, first and second side walls of the enclosure are of a first height above a floor of the enclosure while the front wall is of a lower height. The air is fed into the inner barrel, using the venting piping of the support cushion, such as to create a flow of air, which starts from an intermediate stage of the compressor, and goes towards the inner barrel.