The subject matter disclosed herein provides methods and apparatus, including computer program products, for determining keys for use with data structures, such as objects, business objects, view business objects, and the like. A collet with a knurled locking collar slides and locks at any desired point along the length of a straight mirror receiving shaft. The second encoded data signal is generated in response to the first encoded data signal and the baseband video signal. The pick up arm assembly can be easily removed from the front of the truck, and can be pivoted outward for maintenance purposes. The light opening in the bottom surface of the mirror case includes a lens positioned therein that directs light emitted by the light source into the passenger compartment of the vehicle; the direction of the light out of the mirror case and into the passenger compartment being non-adjustable with respect to the mirror case. Here, a direction of switching between the tables may be one-directional.