Nanostructured chemicals such as polyhedral oligomeric silsesquioxanes, polyhedral oligomeric silicates, and polyhedral oligomeric metallasesquioxanes are attached to living and nonliving systems as biomaterials to provide a nanoscopic topology that favors biomimetic function and cellular modulation. The inkjet printer includes a purge tray configured with a wiper to remove a substantial portion of the purged ink from the faces of the printheads without contacting the printheads. The speed selector includes only one switch member that is slidably movable between three positions to cause the transmission to operate in a corresponding number of speed ratios. A first policy element to the first policy enforcement point, and a second policy element to the second policy enforcement point, are allocated. The lubricating oil composition has an excellent low-temperature fluidity, a low evaporativity, and a good oxidation stability.