A method for protecting a circuit component on a semiconductor substrate from a plasma etching or other removal process includes forming a screening layer over an auxiliary layer to conceal at least an area of the auxiliary layer that overlays at least a portion of the circuit component, such as for example a high-ohmic poly resistor. The engine has a compressor for providing compressed air, a combustor for combusting fuel with the compressed air to provide combustion gases, and a radial inflow turbine having an inlet configured to receive the combustion gases. The system includes an environment sensor arrangement configured to sense a distance between the vehicle and an object other than the vehicle and an operating sensor arrangement configured to sense an operating state of the vehicle. The invention is particularly effective over wireless Internet and can be used in a content delivery system to dynamically choose the best server between a set of servers to satisfy the request of a client, or to select the best route in a content deliver or global hosting system. A tray is provided for supporting print media from below wherein the tray is pivotally attached to the housing for movement between a printer operational position and a printer non-operational position, wherein the tray is disposed between the cover and the front wall when the tray is in the printer non-operational position.