Masking to protect flooring when a baluster on the floor is being painted includes a masking sheet preformed with an opening therein inwardly of the sheet edges conforming in shape and size to the base of the baluster to be painted and having an adhesive coating on its bottom in turn covered by a release sheet that is removed before the masking sheet is applied. The device is usable for dusting, cleaning, polishing and buffing, is washable and may be treated with chemicals for enhanced use. All of these operations must be performed at very high-speeds in order to keep up with today’s high-speed computer network traffic. Reaction lights having particular wavelengths are prepared, which are absorbed by each of the source gases, are prepared. A particular RBT associated with the code extracted from the telephone number is identified in a table storing a plurality of codes each associated with a corresponding RBT.