A semiconductor laser comprises: a semiconductor substrate and a lower cladding layer, an active layer, and an upper cladding layer on the semiconductor substrate. The routing layer has at least two routing protocol computing entities, namely a first and a second routing protocol computing entities. The frequency pulse is analyzed by an analyzer circuit of the switched-off device, the analyzer circuit having a frequency-selective filter and a threshold detector. The server includes apparatus for running the application and the client computer includes apparatus for locally running at least one further application. After flossing, one tubular section adjacent to the gap is moved to the next tubular section adjacent to the gap to expose a fresh floss portion for later use. Upon construction the packaging blank provides a reclosable container having an integral pour spout that is releasably securable to a portion of the top panel.