[0079] According to various configurations, the data processing system 800 can operate in a networked environment using logical connections to remote computers through a network such as the network 820. The data processing system 800 can connect to the network 820 through a network interface unit 816 connected to the bus 810. It should be appreciated that the network interface unit 816 can also be utilized to connect to other types of networks and remote computer systems. The data processing system 800 can also include an input/output controller 818 for receiving and processing input from a number of other devices, including a keyboard, mouse, touch input, an electronic stylus (not shown in FIG. 8), or a physical sensor such as a video camera. Similarly, the input/output controller 818 can provide output to a display screen or other type of output device (also not shown in FIG. [0080] It should be appreciated that the software components described herein, when loaded into the CPU 802 and executed, can transform the CPU 802 and the overall data processing system 800 from a general-purpose computing device into a special-purpose computing device customized to facilitate the functionality presented herein. The CPU 802 can be constructed from any number of transistors or other discrete circuit elements, which can individually or collectively assume any number of states. More specifically, the CPU 802 can operate as a finite-state machine, in response to executable instructions contained within the software modules disclosed herein. These computer-executable instructions can transform the CPU 802 by specifying how the CPU 802 transitions between states, thereby transforming the transistors or other discrete hardware elements constituting the CPU 802. [0081] Encoding the software modules presented herein can also transform the physical structure of the computer readable media presented herein. The specific transformation of physical structure depends on various factors, in different implementations of this description. Examples of such factors include, but are not limited to, the technology used to implement the computer readable media, whether the computer readable media is characterized as primary or secondary storage, and the like. For example, if the computer readable media is implemented as semiconductor-based memory, the software disclosed herein can be encoded on the computer readable media by transforming the physical state of the semiconductor memory. For instance, the software can transform the state of transistors, capacitors, or other discrete circuit elements constituting the semiconductor memory. The software can also transform the physical state of such components in order to store data thereupon. [0082] As another example, the computer readable media disclosed herein can be 8)•