A flow processing facility, which uses a set of artificial neurons for pattern recognition, such as a self-organizing map, in order to provide security and protection to a computer or computer system supports unified threat management based at least in part on patterns relevant to a variety of types of threats that relate to computer systems, including computer networks. In a duplex print mode, the printing section prints either one of a first and a second image formed in a master side by side on the front side of a first sheet. The compositions are substantially free of materials which form an oily coating on the hair, such as dimethicone gums, oils, triglycerides, petrolatums, unsaturated fatty acids, oils, C18-C28 mono-long chain alkyl quaternary ammonium materials, and combinations of those materials. A properly functioning vapor recovery system recovers approximately one unit volume of vapor for every unit volume of dispensed liquid fuel. Preferably, header and footer engagement assemblies are also provided to secure the door to the header and floor.