Geometric systems for building 3-D structures from a plurality of 2-D building elements, including a first building element defining a first shape defined by edges with a first dimension, and a second building element defining a second shape incongruent to the first shape defined by edges with a second dimension incongruent to the first dimension. The auxiliary control unit includes a safing mode and a scrap mode, and operates in the safing mode in an initial state. A second door has a first end translatably connected to the vehicle and a second end translatably connected to the vehicle adjacent to the central region of the opening at a closed position. The storage box is contained within the body and can be used to store spare and used scraper blades. Accordingly, when such information is displayed for an incoming phone call, a user is able to quickly determine which line is being called based on a better user-created description of the CNI information.