A panorama viewer is disclosed which facilitates navigation from within the panorama of a larger, structured system such as a map. In one embodiment, the fabric includes a core spun yarn, wherein the core may be made from glass, carbon, basalt, aramid or metal. The DMACIF outputs a 7-bit encoded address together with a transfer request signal. A clip member is engageable with a second end of the elongated member for engagement with a preselected object for securing the elongated member having such loop member attached thereto with such earbud disposed therein to such preselected object. The apparatus also may simultaneously prevent a half-locked state of the locking pins. In accordance with the invention, the seal is made on the flat sides adjacent to the lips by elastic deflection of the tabs pushing back one of the lips.