A film formation method for a semiconductor process is arranged to form a thin film on a target substrate by CVD, while supplying a first process gas for film formation and a second process gas for reacting with the first process gas to a process field accommodating the target substrate. The multi-function winch includes a front mounting assembly, a back mounting assembly, a column assembly, an elbow assembly, and a winch assembly. The objects may be created according to drawing instructions provided by the visualization platform, an application requesting the object’s creation, andor at least one of the feature extensions. Wires and cables for connecting the surveillance equipment with the electronics and power supply are run through the support pole. At least two reflections on the external surface of the plate are produced through the optical coupler without reflection on the internal surface of the plate. By pre-computing the transmit waveform samples, the required loading on the PC microprocessor is reduced during time critical periods.