One embodiment is a system for the development of a film includes an infrared light source and a visible light source. This embodiment makes it possible to carry the coolant or lubricant into the outer holding elements without difficulties. Alternatively, a trough may be formed and a conductor coupled with one end of a conductor inserted in the trough. Based on device state information andor one or more policies, the managed browser may switch between the managed mode and the unmanaged mode, and the managed browser may provide various functionalities, which may include selectively providing access to enterprise resources, based on such state information andor the one or more policies. The cover can comprise an inner cover fitted over the base plate and formed with an outwardly open threaded socket and a decorative outer cover fitted over the inner cover around the socket.