A building fire escape system, comprising an auxiliary descending device, the auxiliary descending device being a sliding pole or a spiral chute, and at least one refuge chamber, the refuge chamber being a fireproof spatial structure integrated with the building. Sets of changes to a web site are scheduled for release at a specified time. To implement this mechanism, a component has been developed that parses XML descriptors and provides an API to the test harness. Typically, the thin-film deposition technique is DC magnetron sputtering. The device also includes at least one first conductive layer common to the at least one first and the at least one second memory elements. In another embodiment, the contacts are grouped into first, second and third sets of contacts positioned in the first, second and third tongue sections respectively.