A pressure vessel test rig for testing a component under high pressure and temperature, the pressure vessel having a flange with an opening so that instrumentation lines can pass from inside the vessel to outside, and a sealing plate with grooves that provide a seal for the instrumentation lines when a cover plate is secured to the flange. These enhanced session emulation techniques may be used for many applications, including modernizing legacy applications, particularly in mid-range or mainframe host computing. Certain exemplary embodiments can comprise a method, comprising: via a PLC network interface: presenting a PLC network as a namespace shell extension of an operating system of a non-PLC information device; and searching the PLC network for at least one item corresponding to one or more search parameters. In another embodiment, a method is provided to assist in distinguishing duplicate or counterfeit vouchers.