An apparatus worn by a driver or user of vehicle: The apparatus has a yoke with an aperture sized to receive a user’s head. In one embodiment, database statements embedded in the program source are evaluated to identify statements of the source code affected by, or affecting, the changed element of the database. In one example, the DBR structure includes a first portion where the thicknesses of the layers are larger, and also includes a second portion where the thicknesses of the layers are smaller. The baffles can be constructed from a different material than the carrier since the baffles are not structural components in the gear train. There is also disclosed a method of knotlessly anchoring a section of tissue to a section of bone having a bore drilled therethrough. The processor may be configured to divide gray value byte data into high priority portions and low priority portions distributed as constellation points in a constellation matrix and to provide separation between each of the constellation points by assigning a unique mapping code to a plurality of the constellation points.