A refrigerator having an ice and beverage dispenser on both the front and the back of the refrigerator improves efficiency and utilization of the refrigerator. A semipermeable body assembly or plug includes a semipermeable body which is positionable in an opening of an osmotic delivery system. When retrieving the policy settings from the authorized party, the request includes the identity. Thereafter, the oscilloscope automatically analyzes the input signal, independently from any user input, utilizing each of the triggering modes and the trigger parameters specified for each of the triggering modes. Compensation for multipath components with 180 degree phase shifts is also made as well as compensation due to smoothing of the triangular correlation function due to RF characteristics and non-ideal PRN codes. An exemplary embodiment of the invention includes a resist mask with a patterned alignment mark comprising an assemblage of features whose spacing is smaller than the wavelength of light used to measure the alignment.