An authorization service is provided for use with a multifunctional printing system. Transmit standby mode of base station operation is a low powerlow interference level of operation as compared to active mode. Variations in the position of the pattern surface of the mask along the optical axis may be determined by interferometers upon installation of the mask to the lithographic projection apparatus. The rod controls relative displacement of the filter ends, causing transformation of the filter between a deployed configuration and a collapsed configuration. Also disclosed are pharmaceutical compositions that include a compound which inhibits -amyloid peptide release andor its synthesis as well as methods for treating Alzheimers disease both prophylactically and therapeutically with such pharmaceutical compositions. The invention also has potential application to for diagnosis andor treatment of certain mental and physical disorders, and in other situations where a form of companionship may be provided the user.