A trimmer having first and second cutting blades. A conventional Uniform Resource Locator naming scheme is extended by allowing any component to be mapped to an address. The roller includes at least one of bristles and baffle walls configured to be in partial contact with a floor covering during the vacuuming operation. Preferred structure combines both sliding action and pivoting action to displace the cover from over the vessel opening, and to present the cover to the opening for sealing over the cooking vessel. The terminals of the switching contact are electrically connected to a signal processing means in the base unit. The determined data mapping alternatives are presented in an order according to the ranking of the determined data mapping alternatives.