A system and method for capturing, displaying, and navigating text annotations in a non-modifiable document is disclosed. When there is no pressure in the air spring, the air cell is deflated and the suspension is mechanically bottomed out. The device can also include a tissue attachment apparatus that can be used to secure tissue to the device, thereby providing a method for attaching tissue to bone. The second gathering element and intake elements are adapted to be driven at related rates. If the tether is cut, transmission is interrupted to indicate a tampering condition. The invention further relates to a sender, a receiver, an optical network element, and a serialized packet format.