A vapor compression system includes a compressor, a condenser, an expansion device and an evaporator. A water-holding reservoir may be mounted onto a handle section. The lowest level of the hierarchy is divided into sections, each section corresponding to an area of a geographic region, and includes the available geographic information, including named geographic items, corresponding to that area. The antenna is shaped as a curve of conductive material in which the geometry of at least a part of said curve comprises a space-filling curve or a grid dimension curve. Preferably, selected content is associated with at least one individual participant in the event, and that content is automatically distributed to channels that are associated with that individual participant.