A directional sound apparatus is described. The fiber optic light-emitting panel includes a plurality of three or more fiber optic strands braided together to form a braided fiber optic strand assembly. The modulated light is detected by any wearable occupancy detectors in the local areas, which transmit detector-locator signals to lighting control units, thereby identifying which local areas are occupied. The method may further include organizing the tabs registered with the window manager according to a predetermined organizational scheme. The residue combats soils andor undesired microorganisms at the locus. The dustpan includes a handgrip which will accommodate the broom handle while the dustpan tray receives the broom head for compact storage.