Calendar entries can be added indicating a proposed change to a calendar event to electronic calendars of all event attendees when the proposed change is pending approval. The peripheral device includes a bus interface and a processor coupled to the bus interface. A tubular sleeve has an inner shape sized for sliding receipt of the snubber element therein. A light source is located above the conveyor path and generates a light beam having a sharp edge which extends across the support surface in a direction transverse to a direction of movement of the object to define a light beam intersect path on the support surface. In further aspects, an optimum direction is determined by estimating an interference signal power which is detected from signals emanating from adjacent base stations and determining a directional setting that minimizes interference to adjacent cells based upon such measurements. anesthetize the tissue and surrounding tissue at the site of the conjunctivodacryocystorhinostomy; b.